برلمان من مجلسين

هذا المقال هو عن a form of legislature. إذا كنت تريد الاستخدامات الأخرى، انظر برلمان من مجلسين (توضيح).

سلطة تشريعية
جزء من سلسلة مقالات حول السياسة
سلطة تشريعية قائمة السلطات التشريعية برلمان عضو برلمان مجموعة برلمانية قائد مجموعة برلمانية الكونگرس عضو الكونگرس Unicameralism Multicameralism Bicameralism Tricameralism (historical) Tetracameralism (historical) Chambers of parliament مجلس أعلى (مجلس شيوخ) مجلس أدنى نظام برلماني مجلس المدينة عضو مجلس مدينة
بوابة سياسة ·

البرلمان ذو المجلسين Bicameralism هو نوع من التشريع، one divided into two separate assemblies, chambers, or houses, known as a bicameral legislature. Bicameralism is distinguished from unicameralism, in which all members deliberate and vote as a single group. اعتبارا من 2015, about 40% of world's national legislatures are bicameral, and about 60% are unicameral.

Often, the members of the two chambers are elected or selected by different methods, which vary from country to country. This can often lead to the two chambers having very different compositions of members.

Enactment of primary legislation often requires a concurrent majority—the approval of a majority of members in each of the chambers of the legislature. When this is the case, the legislature may be called an example of perfect bicameralism. However, in many parliamentary and semi-presidential systems, the house to which the executive is responsible can overrule the other house and may be regarded as an example of imperfect bicameralism. Some legislatures lie in between these two positions, with one house able to overrule the other only under certain circumstances.

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 تاريخ التشريخ ثنائي المجلس

The قصر وستمنستر, seat of the Parliament of the United Kingdom.

The United States Capitol, seat of the United States Congress.

The Sansad Bhavan, seat of the Parliament of India.

The British Parliament is often referred to as the "Mother of Parliaments" (in fact a misquotation of John Bright, who remarked in 1865 that "England is the Mother of Parliaments") because the British Parliament has been the model for most other parliamentary systems, and its Acts have created many other parliaments. The origins of British bicameralism can be traced to 1341, when the Commons met separately from the nobility and clergy for the first time, creating what was effectively an Upper Chamber and a Lower Chamber, with the knights and burgesses sitting in the latter. This Upper Chamber became known as the House of Lords from 1544 onward, and the Lower Chamber became known as the House of Commons, collectively known as the Houses of Parliament.

Many nations with parliaments have to some degree emulated the British "three-tier" model. Most countries in Europe and the Commonwealth have similarly organised parliaments with a largely ceremonial head of state who formally opens and closes parliament, a large elected lower house, and (unlike Britain) a smaller upper house.

The Founding Fathers of the United States also favoured a bicameral legislature. The idea was to have the Senate be wealthier and wiser. Benjamin Rush saw this though, and noted that "this type of dominion is almost always connected with opulence". The Senate was created to be a stabilising force, not elected by mass electors, but selected by the State legislators. Senators would be more knowledgeable and more deliberate—a sort of republican nobility—and a counter to what James Madison saw as the "fickleness and passion" that could absorb the House.

He noted further that "The use of the Senate is to consist in its proceeding with more coolness, with more system and with more wisdom, than the popular branch." Madison's argument led the Framers to grant the Senate prerogatives in foreign policy, an area where steadiness, discretion, and caution were deemed especially important. State legislators chose the Senate, and senators had to possess significant property to be deemed worthy and sensible enough for the position. In 1913, the 17th Amendment passed, which mandated choosing Senators by popular vote rather than State legislatures.

As part of the Great Compromise, the Founding Fathers invented a new rationale for bicameralism in which the Senate had an equal number of delegates per state, and the House had representatives by relative populations.

 الحكمة وراء ثنائية المجالس وانتقادها

A formidable sinister interest may always obtain the complete command of a dominant assembly by some chance and for a moment, and it is therefore of great use to have a second chamber of an opposite sort, differently composed, in which that interest in all likelihood will not rule.

— Walter Bagehot، "The English Constitution", in Norman St John-Stevas, ed., The Collected Works of Walter Bagehot, London, The Economist, vol. 5, pp. 273–274.

There have been a number of rationales put forward in favour of bicameralism. Federal states have often adopted it, and the solution remains popular when regional differences or sensitivities require more explicit representation, with the second chamber representing the constituent states. Nevertheless, the older justification for second chambers—providing opportunities for second thoughts about legislation—has survived. For states considering a different constitutional arrangement that may shift power to new groupings, bicameralism could be demanded by currently hegemonic groups who would otherwise prevent any structural shift (e.g. military dictatorships, aristocracies).

The growing awareness of the complexity of the notion of representation and the multi-functional nature of modern legislatures may be affording incipient new rationales for second chambers, though these do generally remain contested institutions in ways that first chambers are not. An example of political controversy regarding a second chamber has been the debate over the powers of the Senate of Canada or the election of the Senate of France.

The relationship between the two chambers varies: in some cases, they have equal power, while in others, one chamber is clearly superior in its powers. The first tends to be the case in federal systems and those with presidential governments. The second tends to be the case in unitary states with parliamentary systems. There are two streams of thought: critics believe bicameralism makes meaningful political reforms more difficult to achieve and increases the risk of gridlock—particularly in cases where both chambers have similar powers—while proponents argue the merits of the "checks and balances" provided by the bicameral model, which they believe help prevent ill-considered legislation.

 التواصل بين المجلسين

Formal communication between houses is by various methods, including:

Sending messages

Formal notices, such as of resolutions or the passing of bills, usually done in writing, via the clerk and speaker of each house.

Transmission

of bills or amendment to bills requiring agreement from the other house.

Joint session

a plenary session of both houses at the same time and place.

Joint committees

which may be formed by committees of each house agreeing to join, or by joint resolution of each house. The United States Congress has conference committees to resolve discrepancies between House and Senate versions of a bill, similar to "Conferences" in Westminster parliaments.

Conferences

Conferences of the Houses of the English (later British) Parliament met in the Painted Chamber of the Palace of Westminster. Historically there were two distinct types: "ordinary" and "free". The British Parliament last held an ordinary conference in 1860—its elaborate procedure yielding to the simpler sending of messages. A free conference resolves a dispute through "managers" meeting less formally in private. The last free conference at Westminster was in 1836 on an amendment to the Municipal Corporations Act 1835; the previous one had been in 1740—with not much more success than ordinary conferences, the free type yielded to the greater transparency of messages. In the Parliament of Australia there have been two formal conferences, in 1930 and 1931, but many informal conferences. اعتبارا من 2007 the "Conference of Managers" remains the usual procedure for dispute resolution in the Parliament of South Australia. In the Parliament of New South Wales in 2011, the Legislative Assembly requested a free conference with the Legislative Council over a bill on graffiti; after a year the Council refused, describing the mechanism as archaic and inappropriate. The two houses of the Parliament of Canada have also used conferences, but not since 1947 (although they retain the option).

 أمثلة لثنائية الغرف على المستوى الوطني

 الاتحادي

The National Congress of Brazil, seat of the Chamber of Deputies and the Federal Senate

Some countries, such as Argentina, Australia, Austria, Belgium, Bosnia and Herzegovina, Brazil, Canada, Germany, India, Malaysia, Mexico, Nepal, Nigeria, Pakistan, Russia, Switzerland, and the United States, link their bicameral systems to their federal political structure.

In the United States, Australia, Mexico, Brazil and Nepal for example, each state or province is given the same number of seats in one of the houses of the legislature, despite variance between the populations of the states or provinces. This is intended to ensure that smaller states are not overshadowed by larger states, which may have more representation in the other house of the legislature.

 كندا

The federal bicameral Parliament of Canada, which contains a House of Commons and a Senate

Canada's elected lower house, the House of Commons, comprises Members of Parliament (MPs) from single-member "ridings" based mainly on population (updated every 10 years using Census data). The Commons is democratically elected every four years (constitutionally up to five years). In contrast, in Canada's upper house, Senators are appointed to serve until age 75 by the Governor General on the advice of the Prime Minister.

The Government (i.e. executive) is responsible to and must maintain the confidence of the elected House of Commons. Although the two chambers formally have many of the same powers, this accountability clearly makes the Commons dominant—determining which party is in power, approving its proposed budget and (largely) the laws enacted. The Senate primarily acts as a chamber of revision: it almost never rejects bills passed by the Commons but does regularly amend them; such amendments respect each bill's purpose, so they are usually acceptable to the Commons. Occasionally, the two houses cannot come to an agreement on an amendment, which results in rare instances of a key Government bill failing. The Senate's power to investigate issues of concern to Canada can raise their profile (sometimes sharply) on voters' political agendas.

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 أستراليا

The federal bicameral Parliament of Australia, which contains a House of Representatives and a Senate

The bicameral Parliament of Australia consists of two Houses: the lower house is called the House of Representatives and the upper house is named the Senate. As of 31 August 2017, the lower house has 151 members, each elected from single-member constituencies, known as electoral divisions (commonly referred to as "electorates" or "seats") using full-preference instant-runoff voting. This tends to lead to the chamber being dominated by two major groups, the Liberal/National Coalition and the Labor Party. The government of the day must achieve the confidence of this House to gain and hold power.

The upper house, the Senate, is also popularly elected, under the single transferable vote system of proportional representation. There are a total of 76 senators: 12 senators are elected from each of the 6 Australian states (regardless of population) and 2 from each of the 2 autonomous internal territories (the Australian Capital Territory and the Northern Territory). This makes the total number 76, i.e. 6×12 + 2×2.

Unlike upper houses in most Westminster parliamentary systems, the Australian Senate is vested with significant power, including the capacity to block legislation initiated by the government in the House of Representatives, making it a distinctive hybrid of British Westminster bicameralism and US-style bicameralism. As a result of proportional representation, the chamber features a multitude of parties vying for power. The governing party or coalition, which must maintain the confidence of the lower house, rarely has a majority in the Senate and usually needs to negotiate with other parties and Independents to get legislation passed.

 غيرهم

In German, Indian, and Pakistani systems, the upper houses (the Bundesrat, the Rajya Sabha, and the Senate respectively) are even more closely linked with the federal system, being appointed or elected directly by the governments or legislatures of each German or Indian state, or Pakistani province. This was also the case in the United States before the Seventeenth Amendment was adopted. Because of this coupling to the executive branch, German legal doctrine does not treat the Bundesrat as the second chamber of a bicameral system formally. Rather, it sees the Bundesrat and the Bundestag as independent constitutional bodies. Only the directly elected Bundestag is considered the parliament. In the German Bundesrat, the various Länder have between three and six votes; thus, while the less populated states have a lower weight, they still have a stronger voting power than would be the case in a system based proportionately on population, as the most populous Land currently has about 27 times the population of the least populous. The Indian upper house does not have the states represented equally, but on the basis of their population.

There is also bicameralism in countries that are not federations, but have upper houses with representation on a territorial basis. For example, in South Africa, the National Council of Provinces (and before 1997, the Senate) has its members chosen by each province's legislature.

In Spain, the Senate functions as a de facto territorially based upper house, and there has been some pressure from the Autonomous Communities to reform it into a strictly territorial chamber.

The European Union maintains a somewhat close to bicameral legislative system consisting of the European Parliament, which is elected in elections on the basis of universal suffrage, and the Council of the European Union, which consists of one representative for each government of member countries, who are competent for a relevant field of legislation. Though the European Union has a highly unusual character in terms of legislature, one could say that the closest point of equivalency lies within bicameral legislatures. The European Union is considered neither a country nor a state, but it enjoys the power to address national Governments in many areas.

 الأرستقراطي وما بعد الأرستقراطية

In a few countries, bicameralism involves the juxtaposition of democratic and aristocratic elements.

 مجلس اللوردات البريطاني

The House of Lords chamber

The best known example is the British House of Lords, which includes a number of hereditary peers. The House of Lords is a vestige of the aristocratic system that once predominated in British politics, while the other house, the House of Commons, is entirely elected. Over the years, some have proposed reforms to the House of Lords, some of which have been at least partly successful. The House of Lords Act 1999 limited the number of hereditary peers (as opposed to life peers, appointed by the Monarch on the advice of the Prime Minister) to 92, down from around 700. Of these 92, one is the Earl Marshal, a hereditary office always held by the Duke of Norfolk, one is the Lord Great Chamberlain, a hereditary office held by turns, currently by the Marquess of Cholmondeley, and the other 90 are elected by all sitting peers. Hereditary peers elected by the House to sit as representative peers sit for life; when a representative peer dies, there is a by-election to fill the vacancy. The power of the House of Lords to block legislation is curtailed by the Parliament Acts 1911 and 1949. Peers can introduce bills except Money Bills, and all legislation must be passed by both Houses of Parliament. If not passed within two sessions, the House of Commons can override the Lords′ delay by invoking the Parliament Act. Certain legislation, however, must be approved by both Houses without being forced by the Commons under the Parliament Act. These include any bill that would extend the time length of a Parliament, private bills, bills sent to the House of Lords less than one month before the end of a session, and bills that originated in the House of Lords.

Life Peers are appointed either by recommendation of the Appointment Commission (the independent body that vets non-partisan peers, typically from academia, business or culture) or by Dissolution Honours, which take place at the end of every Parliamentary term when leaving MPs may be offered a seat to keep their institutional memory. It is traditional to offer a peerage to every outgoing Speaker of the House of Commons.

Further reform of the Lords has been proposed; however, no proposed reforms have been able to achieve public consensus or government support. Members of the House of Lords all have an aristocratic title, or are from the Clergy. 26 Archbishops and Bishops of the Church of England sit as Lords Spiritual (the Archbishop of Canterbury, Archbishop of York, the Bishop of London, the Bishop of Durham, the Bishop of Winchester and the next 21 longest-serving Bishops). It is usual that retiring Archbishops, and certain other Bishops, are appointed to the Crossbenches and given a life peerage.

Until 2009, 12 Lords of Appeal in Ordinary sat in the House as the highest court in the land; they subsequently became justices of the newly created Supreme Court of the United Kingdom. As of 16 February 2021, 803 people sit in the House of Lords, with 92 Hereditary Peers, 26 Lords Spiritual and 685 Life Peers. Membership is not fixed and decreases only on the death, retirement or resignation of a peer.

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 Japan's former House of Peers

Another example of aristocratic bicameralism was the Japanese House of Peers, abolished after World War II and replaced with the present House of Councillors.

 الدول الأحادية

Some bicameral legislatures have chambers that meet in different buildings, at different parts of the city. Here, France's upper house called the Senate meet in the Luxembourg Palace (top), while the lower house, the National Assembly, meets at the Palais Bourbon (bottom).

Many unitary states like Italy, France, the Netherlands, the Philippines, the Czech Republic, the Republic of Ireland and Romania have bicameral systems. In countries such as these, the upper house generally focuses on scrutinizing and possibly vetoing the decisions of the lower house.

 البرلمان الإيطالي

On the other hand, in Italy the Parliament consists of two chambers that have the same role and power: the Senate (Senate of the Republic, commonly considered the upper house) and the Chamber of Deputies (considered the lower house). The main difference among the two chambers is the way the two chambers are composed: the deputies, in fact, are elected on a nationwide basis, whilst the members of the Senate are elected on a regional basis: this may lead to different majorities among the two chambers because, for example, a party may be the first nationally but second or third in some regions. Considering that in the Italian Republic the Government needs to win confidence votes in both the chambers, it may happen that a Government has a strong majority (usually) in the Chamber of Deputies and a weak one (or no majority at all) in the Senate. This has led sometimes to legislative deadlocks, and has caused instability in the Italian Government.

 Indirectly elected Upper Houses (France, Ireland, Netherlands)

In some of these countries, the upper house is indirectly elected. Members of France's Senate and Ireland's Seanad Éireann are chosen by electoral colleges. In Ireland, it consists of members of the lower house, local councillors, the Taoiseach, and graduates of selected universities, while the Netherlands' Senate is chosen by members of provincial assemblies (who, in turn, are directly elected).

 شبه ثنائية (هونگ كونگ وأيرلندا الشمالية؛ وسابقاً في النرويج وهولندا)

In Hong Kong, members of the unicameral Legislative Council returned from the democratically-elected geographical constituencies and partially democratic functional constituencies are required to vote separately since 1998 on motions, bills or amendments to government bills not introduced by the government. The passage of these motions, bills or amendments to government motions or bills requires double majority in both groups simultaneously. (Before 2004, when elections to the Legislative Council from the Election Committee was abolished, members returned through the Election Committee vote with members returned from geographical constituencies.) The double majority requirement does not apply to motions, bills and amendments introduced by the government.

Another similar situation are cross-community votes in Northern Ireland when the petition of concern procedure is invoked.

Norway had a kind of semi-bicameral legislature with two chambers, or departments, within the same elected body, the Storting. These were called the Odelsting and were abolished after the general election of 2009. According to Morten Søberg, there was a related system in the 1798 constitution of the Batavian Republic.

 أمثلة لثنائية الغرف في الكيانات دون الوطنية

In some countries with federal systems, individual states (like those of the United States, Argentina, Australia and India) may also have bicameral legislatures. A few such states as Nebraska in the U.S., Queensland in Australia, Bavaria in Germany, and Tucumán and Córdoba in Argentina have later adopted unicameral systems. (Brazilian states and Canadian provinces all abolished upper houses).

 الأرجنتين

Provincial legislatures in Argentina

In the Argentine Republic, eight provinces have bicameral legislatures, with a Senate and a Chamber of Deputies: Buenos Aires, Catamarca, Corrientes, Entre Ríos, Mendoza, Salta, San Luis (since 1987) and Santa Fe. Tucumán and Córdoba changed to unicameral systems in 1990 and 2001 respectively. Santiago del Estero changed to a bicameral legislature in 1884, but changed back to a unicameral system in 1903.

 أستراليا

When the Australian states were founded as British colonies in the 19th century, they each had a bicameral Parliament. The lower house was traditionally elected based on the one-vote-one-value principle, with universal male suffrage, later expanded to women, whereas the upper house was either appointed on the advice of the government or elected, with a strong bias towards country voters and landowners. After Federation, these became the state Parliaments. In Queensland, the appointed upper house was abolished in 1922, while in New South Wales there were similar attempts at abolition, before the upper house was reformed in the 1970s to provide for direct election.

Beginning in the 1970s, Australian states began to reform their upper houses to introduce proportional representation in line with the Federal Senate. The first was the South Australian Legislative Council in 1973, which initially used a party list system (replaced with STV in 1982), followed by the Single Transferable Vote being introduced for the New South Wales Legislative Council in 1978, the Western Australian Legislative Council in 1987 and the Victorian Legislative Council in 2003.

Nowadays, the upper house both federally and in most states is elected using proportional representation while the lower house uses Instant-runoff voting in single member electorates. This is reversed in the state of Tasmania, where proportional representation is used for the lower house and single member electorates for the upper house.

 البوسنة والهرسة

The Legislature of the Federation of Bosnia and Herzegovina, one of the two entities of Bosnia and Herzegovina, is a bicameral legislative body. It consists of two chambers. The House of Representatives has 98 delegates, elected for four-year terms by proportional representation. The House of Peoples has 58 members, 17 delegates from among each of the constituent peoples of the Federation, and 7 delegates from among the other peoples. Republika Srpska, the other entity, has a unicameral parliament, known as the National Assembly, but there is also a Council of Peoples who is de facto other house of legislative.

 ألمانيا

The German federal state of Bavaria had a bicameral legislature from 1946 to 1999, when the Senate was abolished by a referendum amending the state's constitution. The other 15 states have used a unicameral system since their founding.

 الهند

Of the 28 states and 8 Union Territories of India, only 6 states that is Andhra Pradesh, Bihar, Karnataka, Maharashtra, Telangana and Uttar Pradesh – have bicameral legislatures, while the rest all have unicameral legislatures. The lower houses are called Legislative Assemblies, and their members are elected by universal adult suffrage from single-member constituencies in state elections, which are normally held every five years called Vidhana Sabha. In the six states with bicameral legislatures, the upper house is called the Legislative Council (Vidhan Parishad) or Vidhana Parishat, one-third of whose members are elected every two years. Members of Legislative Council are elected in various ways:

• One-third are elected by the members of local bodies in the state such as municipalities, gram panchayats, block development councils and district councils.
• One-third are elected by the members of the state's Legislative Assembly from amongst persons who are not members of the State Legislative Assembly.
• One-sixth are nominated by the governor of the state from amongst persons having knowledge or practical experience in fields such as literature, science, arts, the co-operative movement and social service.
• One-twelfth are elected from special constituencies by persons who are college graduates of three years' standing residing in those constituencies.
• One-twelfth are elected by persons engaged for at least three years in teaching in educational institutions within the state not lower than secondary schools, including colleges and universities.

From 1956 to 1958 the Andhra Pradesh Legislature was unicameral. In 1958, when the State Legislative Council was formed, it became bicameral until 1 June 1985 when it was abolished. This continued until March 2007 when the State Legislative Council was reestablished and elections were held for its seats. In Tamil Nadu, a resolution was passed on 14 May 1986 and the state's Legislative Council was dissolved on 1 November 1986. Again on 12 April 2010, a resolution was passed to reestablish the council, but was ultimately unsuccessful. Similarly, the states of Assam, Jammu and Kashmir, Madhya Pradesh, Punjab, and West Bengal have also dissolved the upper houses of their state legislatures.

 روسيا

In the Soviet Union, regional and local Soviets were unicameral. After the adoption of the 1993 Russian Constitution, bicameralism was introduced in some regions. Bicameral regional legislatures are still technically allowed by federal law but this clause is dormant now. The last region to switch from bicameralism to unicameralism was Sverdlovsk Oblast in 2012.

 الولايات المتحدة

During the 1930s, the Legislature of the State of Nebraska was reduced from bicameral to unicameral with the 43 members that once comprised that state's Senate. One of the arguments used to sell the idea at the time to Nebraska voters was that by adopting a unicameral system, the perceived evils of the "conference committee" process would be eliminated.

A conference committee is appointed when the two chambers cannot agree on the same wording of a proposal, and consists of a small number of legislators from each chamber. This tends to place much power in the hands of only a small number of legislators. Whatever legislation, if any, the conference committee finalizes is presented in an unamendable "take-it-or-leave-it" manner by both chambers.

During his term as governor of the State of Minnesota, Jesse Ventura proposed converting the Minnesotan legislature to a single chamber with proportional representation, as a reform that he felt would solve many legislative difficulties and impinge upon legislative corruption. In his book on political issues, Do I Stand Alone?, Ventura argued that bicameral legislatures for provincial and local areas were excessive and unnecessary, and discussed unicameralism as a reform that could address many legislative and budgetary problems for states.

 الإصلاح

 الإصلاح السياسي العربي

A 2005 report on democratic reform in the Arab world by the U.S. Council on Foreign Relations co-sponsored by former Secretary of State Madeleine Albright urged Arab states to adopt bicameralism, with upper chambers appointed on a 'specialized basis'. The Council claimed that this would protect against the 'Tyranny of the majority', expressing concerns that without a system of checks and balances extremists would use the single chamber parliaments to restrict the rights of minority groups.

In 2002, Bahrain adopted a bicameral system with an elected lower chamber and an appointed upper house. This led to a boycott of parliamentary elections that year by the Al Wefaq party, who said that the government would use the upper house to veto their plans. Many secular critics of bicameralism were won around to its benefits in 2005, after many MPs in the lower house voted for the introduction of so-called morality police.

 رومانيا

A referendum on introducing a unicameral Parliament instead of the current bicameral Parliament was held in Romania on 22 November 2009. The turnout rate was 50.95%, with 77.78% of "Yes" votes for a unicameral Parliament. This referendum had a consultative role, thus requiring a parliamentary initiative and another referendum to ratify the new proposed changes.

 ساحل العاج

A referendum on a new constitution was held on 30 October 2016. The constitution draft would create a bicameral Parliament instead of the current unicameral. The Senate is expected to represent the interests of territorial collectivities and Ivoirians living abroad. Two thirds of the Senate is to be elected at the same time as the general election. The remaining one third is appointed by the president elect.

 أمثلة

 حالية

  Nations with a bicameral legislature.

  Nations with a unicameral legislature.

  Nations with a unicameral legislature and an advisory body.

  Nations with no legislature.

  No data.

 اتحادية

Country	Bicameral body		Notes
	Upper house	Lower house
الأرجنتين	National Congress		Of the twenty-three provincial legislatures, eight (Buenos Aires, Catamarca, Corrientes, Entre Ríos, Mendoza, Salta, San Luis, and Santa Fe) are bicameral, while the remaining fifteen and the legislature of the Autonomous City of Buenos Aires are unicameral.
	Senate	Chamber of Deputies
أستراليا	Parliament		All of the state parliaments except Queensland's are also bicameral. The legislatures of the NT and the ACT are unicameral.
	Senate	House of Representatives
النمسا	Parliament		All of the Bundesländer have unicameral parliaments.
	Bundesrat (Federal Council)	Nationalrat (National Council)
بلجيكا	Federal Parliament		All of the community and regional parliaments are unicameral.
	Senate	Chamber of Representatives
البوسنة والهرسك	Parliamentary Assembly		The Parliament of the Federation of Bosnia and Herzegovina is also bicameral, while the National Assembly of Republika Srpska is unicameral.
	House of Peoples	House of Representatives
البرازيل	National Congress		All of the 26 state legislatures and the Federal District legislature are unicameral.
	Senate	Chamber of Deputies
كندا	Parliament		All of the provincial and territorial legislatures are unicameral.
	Senate	House of Commons
إثيوپيا	Federal Parliamentary Assembly		Regional Councils are unicameral. Assemblypersons of the Regional Councils are elected directly.
	House of Federation	House of Peoples' Representatives
ألمانيا	N/A		In Germany, the chambers form two distinct constitutional bodies not framed by a comprehensive institution. German jurisprudence doesn't recognise the Bundesrat as a parliament chamber, because it consists of members of the state governments. Although it must always be heard in the legislative process, it only has to give consent to bills in certain defined areas. All of the federal states (Länder) today have unicameral Landtage.
	Bundesrat (Federal Council)	Bundestag (Federal Diet)
الهند	Parliament		Six of the twenty-eight states also have bicameral legislatures, consisting of the upper house, the State Legislative Council (Vidhan Parishad) and the lower house, the State Legislative Assembly (Vidhan Sabha) respectively. The remaining twenty-two states and the union territories of Delhi, Jammu and Kashmir and Puducherry have unicameral legislatures.
	Rajya Sabha (Council of States)	Lok Sabha (House of the People)
ماليزيا	Parliament		All the 13 State Legislative Assemblies are unicameral.
	Dewan Negara (Senate)	Dewan Rakyat (House of Representatives)
المكسيك	Congress		All the 31 State Congresses and the Legislative Assembly of the Federal District are unicameral.
	Senate	Chamber of Deputies
نيپال	Parliament		All of the provincial assemblies are unicameral.
	Rastriya Sabha (National Assembly)	Pratinidhi Sabha (House of Representatives)
نيجريا	National Assembly
	Senate	House of Representatives
پاكستان	Parliament		All of the provincial assemblies are unicameral.
	Senate	National Assembly
روسيا	Federal Assembly		All the regional legislatures are now unicameral while bicameralism in regions is technically allowed by the Federation.
	Federation Council	State Duma
الصومال	Parliament
	Senate	House of The People
سويسرا	Federal Assembly		All of the cantons have unicameral parliaments.
	Council of States	National Council
الولايات المتحدة	Congress		All of the state legislatures, except Nebraska, are also bicameral. The Legislative Assembly of Puerto Rico is bicameral. The Council of the District of Columbia is unicameral.
	Senate	House of Representatives

 Unitary

Country	Bicameral body		Notes
	Upper house	Lower house
أفغانستان	National Assembly
	Meshrano Jirga (House of Elders)	Wolesi Jirga (House of the People)
الجزائر	Parliament
	Council of the Nation	People's National Assembly
أنتيگا وبربودا	Parliament
	Senate	House of Representatives
البهاماز	Parliament
	Senate	House of Assembly
البحرين	National Assembly
	Consultative Council	Council of Representatives
بربادوس	Parliament
	Senate	House of Assembly
بلاروس	National Assembly
	Council	House of Representatives
بليز	National Assembly
	Senate	House of Representatives
بوتان	Parliament
	National Council	National Assembly
بوليڤيا	Plurinational Legislative Assembly
	Senate	Chamber of Deputies
بوروندي	Parliament
	Senate	National Assembly
كمبوديا	Parliament
	Senate	National Assembly
الكاميرون	Parliament
	Senate	National Assembly
جمهورية أفريقيا الوسطى	Parliament
	Senate	National Assembly
تشيلي	National Congress
	Senate	Chamber of Deputies
كولومبيا	Congress
	Senate	Chamber of Representatives
التشيك	Parliament
	Senate	Chamber of Deputies
الكونغو الديمقراطية	Parliament
	Senate	National Assembly
الكونغو	Parliament
	Senate	National Assembly
جمهورية الدومنيكان	Congress
	Senate	Chamber of Deputies
غينيا الإستوائية	Parliament
	Senate	National Assembly
إسواتيني	Parliament
	Senate	House of Assembly
فرنسا	Parliament in the Fifth French Republic		All Regional Councils are unicameral. The regional councillors are elected directly.
	Senate	National Assembly
الگابون	Parliament
	Senate	National Assembly
گرينادا	Parliament
	Senate	House of Representatives
هايتي	Parliament
	Senate	Chamber of Deputies
إندونيسيا	People's Consultative Assembly		All of the provinces have unicameral parliaments.
	Regional Representative Council	People's Representative Council
أيرلندا	Oireachtas		A 2013 proposal to abolish the Seanad was defeated at referendum.
	Seanad Éireann (Senate of Ireland)	Dáil Éireann (Assembly of Ireland)
إيطاليا	Parliament		Both houses possess the same powers. The executive is responsible to both houses. All of the regional councils are unicameral.
	Senate of the Republic	Chamber of Deputies
ساحل العاج	Parliament
	Senate	National Assembly
جامايكا	Parliament
	Senate	House of Representatives
اليابان	National Diet
	House of Councillors	House of Representatives
الأردن	Parliament
	Senate	House of Representatives
قزخستان	Parliament
	Senate	Majilis (Assembly of People)
كنيا	Parliament
	Senate	National Assembly
لسوتو	Parliament
	Senate	National Assembly
ليبريا	Legislature
	Senate	House of Representatives
مدغشقر	Parliament
	Senate	National Assembly
المغرب	Parliament
	House of Councillors	House of Representatives
ميانمار	Pyidaungsu Hluttaw (Assembly of the Union)		All the 14 State and Region Hluttaw (Assemblies) are unicameral.
	Amyotha Hluttaw (House of Nationalities)	Pyithu Hluttaw (House of Representatives)
ناميبيا	Parliament
	National Council	National Assembly
هولندا	States General
	Eerste Kamer	Tweede Kamer
عُمان	Parliament
	Majlis al-Dawla (Council of State)	Majlis al-Shura (Consultative Assembly)
پالاو	National Congress
	Senate	House of Delegates
پاراگواي	Congress
	Senate	Chamber of Deputies
الفلپين	Congress		The Bangsamoro Parliament of the Bangsamoro Autonomous Region in Muslim Mindanao and all Sangguniang Panlalawigan (Provincial Council), Sangguniang Panlungsod (City Council), and Sangguiniang Bayan (Municipal Council) are unicameral.
	Senate	House of Representatives
پولندا	National Assembly		All of the voivodeship sejmiks are unicameral.
	Senate	Sejm (Diet)
رومانيا	Parliament
	Senate	Chamber of Deputies
رواندا	Parliament
	Senate	Chamber of Deputies
سانت لوشيا	Parliament
	Senate	House of Assembly
سلوڤنيا	Parliament		In 2008, the Constitutional Court of Slovenia recognized the Slovenian Parliament as incompletely bicameral.
	National Council	National Assembly
أرض الصومال	Parliament		Each house has 82 members. The constitution of Somaliland does not clarify how members of the elders house are elected. But the members of the house of representative are elected once every five years.
	House of Elders	House of Representatives
جنوب أفريقيا	Parliament		All of the provincial legislatures are unicameral.
	National Council of Provinces	National Assembly
إسپانيا	Cortes Generales		A fixed number of 208 members of the Senate are elected by citizens, a variable number (currently 57) are appointed by the autonomous regions. Congress of Deputies can override a negative vote of the Senate on a bill with an absolute majority affirmative vote. Moreover, each Spanish autonomous region has its own unicameral regional parliament, with wide-ranging legislative powers on their own.
	Senate	Congress of Deputies
طاجيكستان	Supreme Assembly
	National Assembly	Assembly of Representatives
تايلند	National Assembly
	Senate	House of Representatives
ترنيداد وتوباگو	Parliament		The Tobago House of Assembly in the island of Tobago is unicameral.
	Senate	House of Representatives
تركمنستان	National Council
	People's Council	Assembly
المملكة المتحدة	Parliament		Scotland, Wales and Northern Ireland have devolved unicameral legislatures, each with a varying range of powers.
	House of Lords	House of Commons
أوروگواي	General Assembly
	Senate	Chamber of Representatives
اوزبكستان	Oliy Majlis
	Senate	Legislative Chamber
اليمن	Parliament
	Shura Council	House of Representatives
زيمبابوي	Parliament
	Senate	National Assembly of Zimbabwe

 Historical

الدنمارك	Rigsdagen		Under the 1849 constitution Rigsdagen was created, with two houses, an upper and a lower house. However, after the 1953 referendum, both Rigsdagen and the Landsting was abolished, making the Folketing the sole chamber of the parliament.
	Landsting (Upper house)	Folketing (Lower house)
اليونان	Parliament of the Hellenes		The Senate as an upper chamber was established by the Greek Constitution of 1844, of the Kingdom of Greece, and was abolished by the Greek Constitution of 1864. The Senate was reestabished by the republican Constitution of 1927, which establishing the Second Hellenic Republic and was disestablished by the restoration of the Kingdom of Greece at 1935.
	Gerousia (Senate)	Vouli (Chamber of Deputies)
كوريا الجنوبية	National Assembly		Under the first constitution (first republic, 1948–52), the National Assembly was unicameral. The second and third constitutions (first republic, 1952–60) regulated the National Assembly was bicameral and consisted of the House of Commons and the Senate, but only the House of Commons was established and the House of Commons could not pass a bill to establish the Senate. During the short-lived second republic (1960–61), the National Assembly became practically bicameral, but it was overturned by the May 16 coup. The National Assembly has been unicameral since its reopen in 1963.
	Senate	House of Commons
نيوزيلندا	Parliament		Until 1950, the New Zealand Parliament was bicameral. It became unicameral in 1951, following the abolition of the Legislative Council, leaving the House of Representatives as the sole parliamentary chamber.
	Legislative Council	House of Representatives
پيرو	Congress		The 1979 Constitution, which marked the return to democracy, followed the trend of previous constitutions by retaining a bicameral legislature. However it was dissolved altogether by President Alberto Fujimori by his 1992 autocoup. Later, under the newer 1993 constitution, the bicameral system was replaced by the unicameral Congress of the Republic.
	Senate	Chamber of Deputies
الپرتغال	Cortes		During the period of Constitutional Monarchy, the Portuguese Parliament was bicameral. The lower house was the Chamber of Deputies and the upper house was the Chamber of Peers (except during the 1838–1842 period, where a Senate existed instead). With the replacement of the Monarchy by the Republic in 1910, the Parliament continued to be bicameral with a Chamber of Deputies and a Senate existing until 1926.
	Chamber of Peers	Chamber of Deputies
الاتحاد السوڤيتي	Supreme Soviet of the Soviet Union		The Congress of People's Deputies superseded the Supreme Soviet. The Soviet of the Republics briefly succeeded the Soviet of Nationalities in late 1991.
	Soviet of Nationalities	Soviet of the Union
السويد	Riksdagen		Until 1970, the Swedish Riksdag was bicameral. It became unicameral in 1971, but retained the name Riksdag.
	Första kammaren (Upper house)	Andra kammaren (Lower house)
يوغوسلاڤيا	Federal Assembly		Between 1974 and 1992.
	Chamber of Republics	Federal Chamber
تركيا	Parliament		It was established with the Turkish constitution of 1961 and abolished with the Turkish constitution of 1982, although it did not exist between 1980 and 1982 either as a result of the 1980 coup d'état in Turkey.
	Senate of the Republic	National Assembly
ڤنزويلا	Congress		Under the 1999 constitution, the bicameral system was replaced by the unicameral National Assembly of Venezuela.
	Senate	Chamber of Deputies
فيجي	Parliament		Original bicameral system suspended by 2006 coup. 2013 Constitution of Fiji abolished it and replaced it with a single chamber Parliament.
	Senate	House of Representatives
موريتانيا	Parliament		Under the 2017 Referendum, the bicameral system was replaced by the unicameral system.
	Senate	National Assembly
إيران	Parliament		Between 1950 and 1979
	Senate	National Assembly
كرواتيا	Parliament		Between 1990 and 2001
	Chamber of Counties	Chamber of Representatives
ڤيتنام الجنوبية	Parliament		Between 1955 and 1975
	Senate	National Assembly
تشيكوسلوڤاكيا	National Assembly		Between 1920 and 1939
	Senate	Chamber of Deputies
	Federal Assembly		Under the Constitutional Act on the Czechoslovak Federation, the Federal Assembly replaced the unicameral National Assembly in 1969. Its two constituent republics, the Czech (Socialist) Republic and the Slovak (Socialist) Republic, had unicameral legislatures (Czech National Council and Slovak National Council). When Czechoslovakia was dissolved at the start of 1993, the Federal Assembly was disbanded. The Czech Republic established their upper house, the Senate, in December 1992.
	Chamber of Nations	Chamber of People

 انظر أيضاً

• List of abolished upper houses
• Tricameralism

 للاستزادة

• Aroney, Nicholas (2008). "Four Reasons for an Upper House: Representative Democracy, Public Deliberation, Legislative Outputs and Executive Accountability". Adelaide Law Review. 29. Retrieved 21 February 2021.

 وصلات خارجية

• Noncontemporaneous Lawmaking: Can the 110th Senate Enact a Bill Passed by the 109th House?, 16 Cornell J.L. & Pub. Pol'y 331 (2007).
• Aaron-Andrew P. Bruhl, Against Mix-and-Match Lawmaking, 16 Cornell J.L. & Pub. Pol'y 349 (2007).
• Defending the (Not So) Indefensible: A Reply to Professor Aaron-Andrew P. Bruhl, 16 Cornell J.L. & Pub. Pol'y 363 (2007).