ARCHIVE // TH // TIME-SERIES
Legislative branch
Thailand — 45 years of data
Historical Values
| Year | Value |
|---|---|
| 1990 | bicameral National Assembly (Ratha Satha) consists of an upper house or Senate (Woothi Satha) and a lower house or House of Representatives (Satha Poothan) |
| 1991 | bicameral National Assembly (Rathasatha) consists of an upper house or Senate (Vuthisatha) and a lower house or House of Representatives (Saphaphoothan-Rajsadhorn); following the military coup of 23 February 1991 the National Assembly was dissolved and a new interim National Legislative Assembly has been formed until elections are held in April 1992 |
| 1992 | bicameral National Assembly (Rathasatha) consists of an upper house or Senate (Vuthisatha) and a lower house or House of Representatives (Saphaphoothan-Rajsadhorn) |
| 1993 | bicameral National Assembly (Rathasatha) consists of an upper house or Senate (Vuthisatha) and a lower house or House of Representatives (Saphaphoothan-Rajsadhorn) |
| 1994 | NA |
| 1994 | bicameral National Assembly (Rathasatha) |
| 1994 | consists of a 270-member appointed body |
| 1994 | elections last held 13 September 1992 (next to be held by NA); results - percent of vote by party NA; seats - (360 total) DP 79, TNP 77, NDP 60, NAP 51, Phalang Tham 47, SAP 22, LDP 8, SP 8, Mass Party 4, Thai Citizen's Party 3, People's Party 1, People's Force Party 0 |
| 1995 | NA |
| 1995 | bicameral National Assembly (Rathasatha) |
| 1995 | consists of a 270-member appointed body |
| 1995 | elections last held 13 September 1992 (next to be held NA); results - percent of vote by party NA; seats - (360 total) DP 79, TNP 77, NDP 60, NAP 51, Phalang Tham 47, SAP 22, LDP 8, SP 8, Mass Party 4, Thai Citizen's Party 3, People's Party 1, People's Force Party 0 |
| 1996 | NA |
| 1996 | bicameral National Assembly (Rathasapha) |
| 1996 | consists of a 270-member appointed body |
| 1996 | elections last held 2 July 1995 (next to be held 2 July 1999); results - percent of vote by party NA; seats - (391 total) TNP 93, DP 86, NAP 56, NDP 53, PDP 23, SAP 23, NTP 18, TCP 18, LDP 10, SP 8, MP 3 |
| 1997 | bicameral National Assembly or Rathasapha consists of the Senate or Wuthisapha (a 270-member appointed body; members serve six-year terms) and the House of Representatives or Sapha Phuthaen Ratsadon (393 seats; members elected by popular vote to serve four-year terms) elections : House of Representatives - last held 17 November 1996 (next scheduled to be held by 17 November 2000, but may be held earlier as Prime Minister CHAWALIT has promised to hold elections after the draft of the new constitu |
| 1998 | bicameral National Assembly or Rathasapha consists of the Senate or Wuthisapha (a 270-member appointed body; members serve six-year terms) and the House of Representatives or Sapha Phuthaen Ratsadon (393 seats; members elected by popular vote to serve four-year terms) elections: House of Representatives-last held 17 November 1996 (next must be held by 17 November 2000, but may be held earlier) election results: House of Representatives-percent of vote by party-NA; seats by party - NAP 125, DP 12 |
| 1999 | bicameral National Assembly or Rathasapha consists of the Senate or Wuthisapha (a 253-member appointed body which will be phased into a 200-member elected body starting in March 2000; members serve six-year terms) and the House of Representatives or Sapha Phuthaen Ratsadon (currently has 391 members, but will become a 500-member body after the next election; members elected by popular vote to serve four-year terms) elections: House of Representatives--last held 17 November 1996 (next scheduled t |
| 2000 | bicameral National Assembly or Rathasapha consists of the Senate or Wuthisapha (a 253-member appointed body which will be phased into a 200-member elected body starting in March 2000; members serve six-year terms) and the House of Representatives or Sapha Phuthaen Ratsadon (currently has 392 members, but will become a 500-member body after the next election; members elected by popular vote to serve four-year terms) elections: House of Representatives - last held 17 November 1996 (next scheduled |
| 2001 | bicameral National Assembly or Rathasapha consists of the Senate or Wuthisapha (200 seats; members elected by popular vote to serve four-year terms) and the House of Representatives or Sapha Phuthaen Ratsadon (500 seats; members elected by popular vote to serve four-year terms) elections: Senate - last held 4 March, 29 April, 4 June, 9 July, and 22 July 2000 (next to be held NA March 2004); House of Representatives - last held 6 January 2001 (next to be held NA January 2005) election results: |
| 2002 | bicameral National Assembly or Rathasapha consists of the Senate or Wuthisapha (200 seats; members elected by popular vote to serve four-year terms) and the House of Representatives or Sapha Phuthaen Ratsadon (500 seats; members elected by popular vote to serve four-year terms) elections: Senate - last held 4 March, 29 April, 4 June, 9 July, and 22 July 2000 (next to be held NA March 2004); House of Representatives - last held 6 January 2001 (next to be held NA January 2005) election results: Se |
| 2003 | bicameral National Assembly or Rathasapha consists of the Senate or Wuthisapha (200 seats; members elected by popular vote to serve four-year terms) and the House of Representatives or Sapha Phuthaen Ratsadon (500 seats; members elected by popular vote to serve four-year terms) elections: Senate - last held 4 March, 29 April, 4 June, 9 July, and 22 July 2000 (next to be held NA March 2004); House of Representatives - last held 6 January 2001 (next to be held NA January 2005) election results: Se |
| 2004 | bicameral National Assembly or Rathasapha consists of the Senate or Wuthisapha (200 seats; members elected by popular vote to serve six-year terms) and the House of Representatives or Sapha Phuthaen Ratsadon (500 seats; members elected by popular vote to serve four-year terms) elections: Senate - last held 4 March, 29 April, 4 June, 9 July, and 22 July 2000 (next to be held by March 2006); House of Representatives - last held 6 January 2001 (next to be held 6 February 2005) election results: Sen |
| 2005 | bicameral National Assembly or Rathasapha consists of the Senate or Wuthisapha (200 seats; members elected by popular vote to serve six-year terms) and the House of Representatives or Sapha Phuthaen Ratsadon (500 seats; members elected by popular vote to serve four-year terms) elections: Senate - last held 4 March, 29 April, 4 June, 9 July, and 22 July 2000 (next to be held by March 2006); House of Representatives - last held 6 February 2005 (next to be held in February 2009) election results: S |
| 2006 | bicameral National Assembly or Rathasapha consisted of the Senate or Wuthisapha (200 seats; members elected by popular vote to serve six-year terms) and the House of Representatives or Sapha Phuthaen Ratsadon (500 seats; members elected by popular vote to serve four-year terms); after coup in September 2006, junta appointed an interim National Assembly with 250 members to act as Senate and House of Representatives; body has no vote on government matters elections: Senate - last held 19 April 200 |
| 2007 | bicameral National Assembly or Rathasapha consisted of the Senate or Wuthisapha (150 seats; 76 members elected by popular vote representing 76 provinces, 74 appointed by judges and independent government bodies; all serve six-year terms) and the House of Representatives or Sapha Phuthaen Ratsadon (480 seats; 400 members elected from 157 multi-seat constituencies and 80 elected on proportional party-list basis of 10 per eight zones or groupings of provinces; all serve four-year terms); after coup |
| 2008 | bicameral National Assembly or Rathasapha consisted of the Senate or Wuthisapha (150 seats; 76 members elected by popular vote representing 76 provinces, 74 appointed by judges and independent government bodies; all serve six-year terms) and the House of Representatives or Sapha Phuthaen Ratsadon (480 seats; 400 members elected from 157 multi-seat constituencies and 80 elected on proportional party-list basis of 10 per eight zones or groupings of provinces; all serve four-year terms) elections: |
| 2009 | bicameral National Assembly or Rathasapha consisted of the Senate or Wuthisapha (150 seats; 76 members elected by popular vote representing 76 provinces, 74 appointed by judges and independent government bodies; all serve six-year terms) and the House of Representatives or Sapha Phuthaen Ratsadon (480 seats; 400 members elected from 157 multi-seat constituencies and 80 elected on proportional party-list basis of 10 per eight zones or groupings of provinces; all serve four-year terms) elections: |
| 2010 | bicameral National Assembly or Rathasapha consisted of the Senate or Wuthisapha (150 seats; 76 members elected by popular vote representing 76 provinces, 74 appointed by judges and independent government bodies; members serve six-year terms) and the House of Representatives or Sapha Phuthaen Ratsadon (480 seats; 400 members elected from 157 multi-seat constituencies and 80 elected on proportional party-list basis of 10 per eight zones or groupings of provinces; members serve four-year terms) ele |
| 2011 | bicameral National Assembly or Rathasapha consisted of the Senate or Wuthisapha (150 seats; 76 members elected by popular vote representing 76 provinces, 74 appointed by judges and independent government bodies; members serve six-year terms) and the House of Representatives or Sapha Phuthaen Ratsadon (500 seats; 375 members elected from 157 multi-seat constituencies and 125 elected on proportional party-list basis; members serve four-year terms) elections: Senate - last held on 2 March 2008 (nex |
| 2012 | bicameral National Assembly or Rathasapha consisted of the Senate or Wuthisapha (150 seats; 77 members elected by popular vote representing 77 provinces, 73 appointed by judges and independent government bodies; members serve six-year terms) and the House of Representatives or Sapha Phuthaen Ratsadon (500 seats; 375 members elected from 375 single-seat constituencies and 125 elected on proportional party-list basis; members serve four-year terms) elections: Senate - last held on 2 March 2008 (ne |
| 2013 | bicameral National Assembly or Rathasapha consisted of the Senate or Wuthisapha (150 seats; 77 members elected by popular vote representing 77 provinces, 73 appointed by judges and independent government bodies; members serve six-year terms) and the House of Representatives or Sapha Phuthaen Ratsadon (500 seats; 375 members elected from 375 single-seat constituencies and 125 elected on proportional party-list basis; members serve four-year terms) elections: Senate - last held on 2 March 2008 (ne |
| 2014 | bicameral National Assembly or Rathasapha consisted of the Senate or Wuthisapha (150 seats; 76 members elected by popular vote representing 75 provinces and 1 metropolitan district (Bangkok), 74 appointed by the Senate Selection Committee; members serve six-year terms) and the House of Representatives or Sapha Phuthaen Ratsadon (500 seats; 375 members elected from 375 single-seat constituencies and 125 elected on proportional party-list basis; members serve four-year terms) elections: Senate - l |
| 2015 | description: in transition; following the May 2014 military coup, a National Legislative Assembly or Sapha Nitibanyat of no more than 220 members replaced the bicameral National Assembly; elections for a permanent legislative body are currently unscheduled and may not occur until February 2017 | elections: Senate - last held on 30 March 2014; House of Representatives - last held on 2 February 2014, but later declared invalid by the Constitutional Court | election results: Senate - percent of vot |
| 2016 | description: in transition; following the May 2014 military coup, a National Legislative Assembly or Sapha Nitibanyat of no more than 220 members replaced the bicameral National Assembly; elections for a permanent legislative body are currently unscheduled and may not occur until mid-2017 | elections: Senate - last held on 30 March 2014; House of Representatives - last held on 2 February 2014, but later declared invalid by the Constitutional Court | election results: Senate - percent of vote by |
| 2017 | description: in transition; following the May 2014 military coup, a National Legislative Assembly or Sapha Nitibanyat Haeng Chat of no more than 220 members replaced the bicameral National Assembly; expanded to 250 members in September 2016; elections for a permanent legislative body are scheduled for November 2018; the 2017 constitution calls for a 250-member military-appointed Senate with 5-year terms and a 500-member elected House of Representatives with 4-year terms | elections: Senate - las |
| 2018 | description: in transition; following the May 2014 military coup, the National Council for Peace and Order (NCPO) - appointed National Legislative Assembly or Sapha Nitibanyat Haeng Chat of no more than 220 members replaced the bicameral National Assembly; expanded to 250 members in September 2016; elections for a permanent legislative body were announced for February 2019; the 2017 constitution calls for a 250-member, NCPO-appointed Senate with 5-year terms and a 500-member elected House of Rep |
| 2019 | description: bicameral National Assembly or Rathhasapha consists of: Senate or Wuthissapha (250 seats; members appointed by the Royal Thai Army to serve 5-year terms) House of Representatives or Saphaphuthan Ratsadon (500 seats; 375 members elected in single-seat constituencies by simple majority vote and 150 members elected in a single nationwide constituency by party-list proportional representation vote; members serve 4-year terms) | elections: Senate - last held on 14 May 2019 (next to be he |
| 2020 | description: bicameral National Assembly or Rathhasapha consists of: Senate or Wuthissapha (250 seats; members appointed by the Royal Thai Army to serve 5-year terms) House of Representatives or Saphaphuthan Ratsadon (500 seats; 375 members directly elected in single-seat constituencies by simple majority vote and 150 members elected in a single nationwide constituency by party-list proportional representation vote; members serve 4-year terms) | elections: Senate - last held on 14 May 2019 (next |
| 2021 | description: bicameral National Assembly or Ratthasapha consists of: Senate or Wuthisapha (250 seats; members appointed by the Royal Thai Army to serve 5-year terms) House of Representatives or Saphaphuthan Ratsadon (500 seats; 375 members directly elected in single-seat constituencies by simple majority vote and 150 members elected in a single nationwide constituency by party-list proportional representation vote; members serve 4-year terms) elections: Senate - last held on 14 May 2019 (next to |
| 2022 | description: bicameral National Assembly or Ratthasapha consists of: Senate or Wuthisapha (250 seats; members appointed by the Royal Thai Army to serve 5-year terms) House of Representatives or Saphaphuthan Ratsadon (500 seats; 375 members directly elected in single-seat constituencies by simple majority vote and 150 members elected in a single nationwide constituency by party-list proportional representation vote; members serve 4-year terms) elections: Senate - last held on 14 May 2019 (next to |
| 2023 | description: bicameral National Assembly or Ratthasapha consists of: Senate or Wuthisapha (currently 250 seats; members appointed by the National Council for Peace and Order to serve 5-year terms; the Senate appointed in 2024 will consist of 200 members elected from various groups of professionals for a 5-year term) House of Representatives or Saphaphuthan Ratsadon (500 seats; 400 members directly elected in single-seat constituencies by simple majority vote and 100 members elected in a single n |
| 2024 | description: bicameral National Assembly or Ratthasapha consists of: Senate or Wuthisapha (200 seats; members indirectly elected in a three-step process (district, provincial, and national) from 20 eligible groups of professionals and then certified by Election Commission for a single 5-year term) House of Representatives or Saphaphuthan Ratsadon (500 seats; 400 members directly elected in single-seat constituencies by simple majority vote and 100 members elected in a single nationwide constitue |
| 2025 | legislature name: National Assembly (Rathhasapha) legislative structure: bicameral |