UN member or observer state Overall name of legislature Name of house(s) House level Term (years) Voting system Seats Population per seat GDP per seat (million USD) Afghanistan National Assembly[2] House of the People (ولسي جرګه Wolesi Jirga) Lower 5 Single non-transferable vote[3] 249 122,168 119 House of Elders (مشرانوجرګه Meshrano Jirga) Upper 3, 4 and 5 Elected by district and provincial councils, and appointed by the president 102 298,234 291 Albania Parliament (Kuvendi i Shqipërisë) Unicameral 4 Closed list proportional representation with the D'Hondt method by county with a 3% threshold 140 20,226 177 Algeria Parliament[2] People's National Assembly (al-Majlis al-Sha'abi al-Watani) Lower 6 Open list proportional representation with the largest remainder method by province 462 80,303 439 Council of the Nation (al-Majlis al-Umma) Upper 5 Elected by popular wilaya assemblies and communal people's assemblies, and appointed by the President 144 257,638 1,830 Andorra General Council (Consell General de les Valls) Unicameral 4 Parallel voting: Closed list proportional representation with the largest remainder method nationwide and block vote by parish 28 2,789 161 Angola National Assembly (Assembleia Nacional) Unicameral 4 Closed list proportional representation with the D'Hondt method nationwide and by province 220 84,081 525 Antigua and Barbuda Parliament[4] House of Representatives Lower 5 First-past-the-post 19 4,305 82 Senate Upper 5 Appointed by the Governor-General on the advice of the Prime Minister and Leader of the Opposition 17 4,811 92 Argentina National Congress of Argentina (Congreso de la Nación Argentina) Chamber of Deputies of the Nation (Cámara de Diputados de la Nación) Lower 4 Closed list proportional representation with the D'Hondt method by province with a 3% threshold 257 156,097 2,787 Senate of the Nation (Senado de la Nación) Upper 6 Partial block voting by province 72 557,181 9,950 Armenia National Assembly (Ազգային Ժողով Azgayin Zhoghov) Unicameral 5 Parallel voting: Closed list proportional representation in a nationwide constituency with a 5% threshold, and first-past-the-post 131 24,902 136 Australia Parliament of Australia[4] House of Representatives Lower 3 Instant-runoff voting 150 154,200 6,096 Senate Upper 6 Single transferable vote by state/territory 76 304,342 12,032 Austria Austrian Parliament National Council (Nationalrat) Lower 5 Open list proportional representation with the D'Hondt method in constituencies with a 4% threshold 183 43,895 1,923 Federal Council (Bundesrat) Upper 5 and 6 Elected by state legislatures 62 129,563 5,677 Azerbaijan National Assembly (Milli Məclis) Unicameral 5 First-past-the-post 125 73,320 744 Bahamas, The Parliament House of Assembly Lower 5 First-past-the-post 38 9,326 283 Senate Upper 5 Appointed by the Governor-General on the advice of the Prime Minister and Leader of the Opposition 16 22,103 674 Bahrain National Assembly[2] Council of Representatives (Majlis an-nuwab) Lower 4 Two-round system 40 30,864 777 Consultative Council (Majlis al-shura) Upper 4 Appointed by the king 40 30,864 777 Bangladesh National Parliament (জাতীয় সংসদ Jatiyo Sangsad) Unicameral 5 First-past-the-post 350 466,909 818 Barbados Parliament House of Assembly Lower 5 First-past-the-post 30 9,486 216 Senate Upper 5 Appointed by the Governor-General on the advice of the Prime Minister and Leader of the Opposition 21 13,551 309 Belarus National Assembly (Нацыянальны сход Nacyjanaĺny schod) House of Representatives (Палата прадстаўнікоў Palata pradstaŭnikoŭ) Lower 4 Two-round system 110 85,997 1,288 Council of the Republic (Савет Рэспублікі Saviet Respubliki) Upper 4 Elected by regional councils, and appointed by the President 64 147,773 2,215 Belgium Federal Parliament (Federaal Parlement / Parlement fédéral / Föderales Parlament) Chamber of Representatives (Kamer van Volksvertegenwoordigers / Chambre des Représentants / Abgeordnetenkammer) Lower 5 Open list proportional representation with the D'Hondt method by province with a 5% threshold 150 74,000 2,897 Senate (Senaat / Sénat / Senat) Upper 5 Elected by community and regional parliaments 60 185,000 7,242 Belize National Assembly House of Representatives Lower 5 First-past-the-post 31 10,748 90 Senate Upper 5 Appointed by the Governor-General on the advice of the Prime Minister and Leader of the Opposition 12 27,766 233 Benin National Assembly (Assemblée Nationale) Unicameral 4 Proportional representation with the largest remainder method in constituencies 83 115,648 176 Bhutan Parliament of Bhutan[5] National Assembly (རྒྱལ་ཡོངས་ཚོགས་འདུ། Gyelyong Tshogdu) Lower 5 First-past-the-post 47 15,072 91 National Council (རྒྱལ་ཡོངས་ཚོགས་སྡེ། Gyelyong Tshogde) Upper 4 First-past-the-post, and appointed by the king 25 28,337 171 Bolivia Plurinational Legislative Assembly (Asamblea Legislativa Plurinacional) Chamber of Deputies (Cámara de Diputados) Lower 5 Closed list mixed-member proportional representation: Proportional representation with the D'Hondt method by department and first-past-the-post 130 83,905 391 Chamber of Senators (Cámara de Senadores) Upper 5 Closed list proportional representation with the D'Hondt method by department 36 302,993 1,414 Bosnia and Herzegovina Parliamentary Assembly (Parlamentarna skupština / Парламентарна скупштина) House of Representatives (Predstavnički dom / Zastupnički dom / Представнички дом) Lower 4 Open list proportional representation with the largest remainder method in constituencies 42 91,422 753 House of Peoples (Dom naroda / Дом народa) Upper 4 Serbs elected by the National Assembly (Republika Srpska) for the Republic of Srpska, and Bosniaks and Croats elected by the House of Peoples of the Federation of Bosnia and Herzegovina for the Federation of Bosnia and Herzegovina 15 255,982 2,109 Botswana Parliament of Botswana National Assembly Unicameral 5 First-past-the-post, and appointed by the President 63 32,211 471 Brazil National Congress (Congresso Nacional) Chamber of Deputies (Câmara dos Deputados) Lower 4 Open list proportional representation with the D'Hondt method by state 513 371,798 4,471 Federal Senate (Senado Federal) Upper 8 Partial block voting by state 81 2,354,724 28,320 Brunei Legislative Council (Majlis Mesyuarat) Unicameral no timeframe Appointed by the Sultan 36 11,355 582 Bulgaria National Assembly (Народно събрание Narodno sabranie) Unicameral 4 Closed list proportional representation with the largest remainder method by constituency with a 4% threshold 240 30,685 420 Burkina Faso National Assembly (Assemblée Nationale) Unicameral 5 Proportional representation with the D'Hondt method nationwide and in constituencies 127 126,281 198 Burundi Parliament[2] National Assembly (Assemblée nationale) Lower 5 Closed list proportional representation with the D'Hondt method in constituencies with a 2% threshold 121 74,570 43 Senate (Sénat) Upper 5 Elected by the communal councils 43 179,577 105 Cambodia Parliament (សភាតំណាងរាស្ត្រ ព្រះរាជាណាចក្រកម្ពុជា) National Assembly (រដ្ឋសភាជាតិ; Rotsaphea) Lower 5 Closed list proportional representation with the D'Hondt method by province 123 108,852 272 Senate (ព្រឹទ្ធសភា; Protsaphea) Upper 6[6] Appointed by the monarch, elected by the National Assembly and commune councils 61 219,490 548 Cameroon Parliament National Assembly Lower 5 First-past-the-post and Block vote: If no list obtains an absolute majority, the one with the highest number of votes is allocated half of the seats; the remainder is allocated to the other best-placed lists through proportional representation 180 97,021 262 Senate Upper 5 Elected by municipal councils, and appointed by the president 100 174,638 472 Canada Parliament (Parlement) House of Commons (Chambre des communes) Lower 4 years, unless elections are called earlier First-past-the-post voting 338 104,571 5,214 Senate (Sénat) Upper Until age 75, or resigns.