Legislature of Buenos Aires Province#Electoral sections

{{Distinguish|text=the Buenos Aires City Legislature}}

{{short description|Provincial legislature in Argentina}}

{{Infobox legislature

| name = Legislature of Buenos Aires Province

| native_name = Legislatura de la Provincia de Buenos Aires

| native_name_lang = es

| coa_pic = Coat_of_arms_of_the_Buenos_Aires_Province.svg

| coa_res = 75px

| coa_caption =

| house_type = Bicameral

| houses = Senate
Chamber of Deputies

| legislature =

| established =

| preceded_by =

| succeeded_by =

| disbanded =

| leader1_type = Senate President{{efn|Ex officio as Vice Governor of Buenos Aires.}}

| leader1 = Verónica Magario

| election1 = {{nowrap|10 December 2019}}

| party1 = (FDT)

| leader2_type = 1st Senate Vice President

| leader2 = Luis Vivona

| election2 = {{nowrap|10 December 2019}}

| party2 = (FDT)

| leader3_type = Chamber President

| leader3 = Federico Otermín

| election3 = {{nowrap|10 December 2019}}

| party3 = (FDT)

| members = 138
46 senators
96 deputies

| house1 = Senate

| house2 = Chamber of Deputies

| structure1 = Argentina Buenos Aires Senado 2021.svg

| structure1_res = 250

| structure2 = File:Cámara de Diputados de la Provincia de Buenos Aires (2021-2023).svg

| structure2_res = 250

| political_groups1 =

• {{Color box|#00A0E4|border=darkgray}} FDT (23)
• {{Color box|#FFD800|border=darkgray}} Juntos (23)

| last_election1 = 14 November 2021 (23 seats)

| political_groups2 =

• {{Color box|#00A0E4|border=darkgray}} FDT (42)
• {{Color box|#FFD800|border=darkgray}} Juntos (41)
• {{Color box|#4e66ad|border=darkgray}} AL (3)
• {{Color box|#19bc9d|border=darkgray}} CF (2)
• {{Color box|darkred|border=darkgray}} FIT (2)
• {{Color box|#ED52AE|border=darkgray}} 17N (1)
• {{Color box|#0072BC|border=darkgray}} FE (1)

| last_election2 = 14 November 2021 (46 seats)

| voting_system1 =

| voting_system2 =

| session_room = NS P. Legislativo.jpg

| session_res = 250px

| meeting_place = Legislative Palace
La Plata, Buenos Aires Province

| footnotes =

}}

The Legislature of Buenos Aires Province ({{langx|es|Legislatura de la Provincia de Buenos Aires|links=no}}) is the legislature of Buenos Aires, one of the twenty three provinces that make up Argentina. It is a bicameral body, comprising the Chamber of Deputies (made up of 92 representatives), and the Senate (with 46 representatives).{{Cite web|url=https://www.hcdiputados-ba.gov.ar/|title=Camara de Diputados de la Provincia de Buenos Aires|last=WOKOPO|website=Camara de Diputados de la Provincia de Buenos Aires|language=es-AR|access-date=2020-02-03}}{{Cite web|url=http://www.senado-ba.gov.ar/nomina.aspx|archive-url=https://web.archive.org/web/20100530092604/http://www.senado-ba.gov.ar/nomina.aspx|url-status=dead|archive-date=2010-05-30|title=Honorable Cámara de Senadores de la Provincia de Buenos Aires|date=2010-05-30|access-date=2020-02-03}}

It is one of eight bicameral legislatures in the country.{{Cite web|url=http://www.parlamentario.com/noticia-98509.html|title=Tips sobre las elecciones 2017 en Argentina - Noticias - Parlamentario|website=www.parlamentario.com|access-date=2020-02-02}}{{Cite web|url=https://www.adnrionegro.com.ar/2017/02/provincias-pj-discuten-si-desdoblan-elecciones/|title=Provincias gobernadas por PJ discuten si desdoblan elecciones|last=ADN|first=Redacción|date=2017-02-22|website=ADN|language=es|access-date=2020-02-02}} Members of both houses are elected by proportional representation for four-year terms in eight multi-member constituencies which span the entirety of the province's territory. As in the National Chamber of Deputies and most other provincial legislatures, elections to both houses of the legislature are held every two years, so that half of its members are up in each election.

Both houses of the Legislature convene in the Legislative Palace of Buenos Aires, in the provincial capital of La Plata. The building, a city landmark, was designed by Hannover architects Gustav Heine and Georg Hagemann in 1883 and completed in 1888.{{cite web|url=http://www.hcdiputados-ba.gov.ar/index.php?id=historias|title=Historias|publisher=Cámara de Diputados de la Provincia de Buenos Aires|access-date=2012-09-22|archive-url=https://web.archive.org/web/20121001205557/http://www.hcdiputados-ba.gov.ar/index.php?id=historias|archive-date=2012-10-01|url-status=dead}}