List of political parties in Chile

As of August 2018 there are 20 legally constituted political parties in Chile.[1]

Parties in green, as of August 2019, support the administration of President Sebastián Piñera.

Party name in Spanish	Founded	International affiliation	Area of operation	Senators (2018-2022)[2]	Deputies (2018-2022)[3]	Regional advisors (2018-2022)[4]	Mayors (2016-2020)	Councilmen (2016-2020)	Weighted representationb
Independent Democratic Uniond Unión Demócrata Independiente	1983	International Democrat Union[5]	Nationwide.	9	30	52	43	351	19.47%
National Renewalc Renovación Nacional	1987	International Democrat Union,[5] Centrist Democrat International[6]	Nationwide.	7	34	72	39	318	17.69%
Socialist Partyi Partido Socialista de Chile	1933	Progressive Alliance, Socialist International, São Paulo Forum, COPPPAL	Nationwide.	7	19	26	27	218	14.14%
Christian Democratic Partyj Partido Demócrata Cristiano	1957	Centrist Democrat International[6]	Nationwide.	5	14	44	56	322	11.98%
Party for Democracyf Partido por la Democracia	1987	Progressive Alliance, Socialist International, COPPPAL	Nationwide.	6	7	26	37	199	11.52%
Political Evolution Partido Evolución Política	2012	None	Nationwide.	1	6	5	0	40	3.63%
Democratic Revolution Revolución Democrática	2012	São Paulo Forum	All regions, except XIV, IX and XII.	1	7	9	0	0	2.59%
Progressive País País Progresista	2018e	São Paulo Forum	Nationwide.	1	0	2	2	40	1.61%
Communist Party Partido Comunista de Chile	1922	São Paulo Forum, Bolivarian Congress of the People, International Meeting of Communist and Workers' Parties	Nationwide.	0	8	11	4	92	1.44%
Radical Party Partido Radical de Chile	1863a	Progressive Alliance, Socialist International, COPPPAL	Nationwide.	0	6	8	13	90	1.31%
Humanist Partyd Partido Humanista	1984	Humanist International, São Paulo Forum	All regions, except X and XI.	0	4	6	0	14	0.67%
Social Green Regionalist Federationm Federación Regionalista Verde Social	2017	None.	Regions II, III, IV, VI, and XI.	0	4	2	0	3	0.53%
Democratic Independent Regionalist Party Partido Regionalista Independiente Demócrata	2018g	None.	Nationwide.	0	0	5	4	47	0.29%
Liberal Party Partido Liberal de Chile	2013h	Liberal International	Regions XV, I and II.	0	2	0	1	0	0.25%
Commons Comunes	2019l	None.	Regions XV, I, II, III, IV, V, RM, and X.	0	2	2	1	8	0.21%
Green Ecologist Party Partido Ecologista Verde	2008	Global Greens	Regions I, II, III, IV, RM, VIII, XIV, and X.	0	1	0	0	6	0.12%
Equality Party Partido Igualdad	2009	None.	Regions XV, I, II,, III, IV, V, RM, VII, XVII and VIII.	0	0	1	0	2	0.04%
Anticapitalist Workers' Left Izquierda Anticapitalista de los Trabajadores	2018	Trotskyist Fraction – Fourth International	Regions IX, XVI, and X.	0	0	0	0	0	%
New Time Nuevo Tiempo	2015	None.	Regions XIV, I, and II.	0	0	0	0	0	%

^a Between 1994 and 2018 it was called the Social Democratic Radical Party for the fusion of the Chilean Social Democracy Party (Partido Socialdemocracia Chilena, founded 1971) and the Radical Party of Chile (Partido Radical de Chile, founded 1863). In 2018 the party regained the name of the Radical Party.
^b The percentage of seats held by a party in each elected body is multiplied by a weighting factor, which is equal to the inverse value of that body's total seats divided by the summation of the inverse values of all bodies' total seats. The resulting weighted percentages are then summed together to obtain a party's "weighted representation" value. (Formula: [S/43^2+D/155^2+R/278^2+M/345^2+C/2224^2]/T, with T=1/43+1/155+1/278+1/345+1/2224, S=party senators, D=party deputies, R=party regional advisors, M=party mayors, C=party councilmen.)
^c Figures updated with the October 2015 party resignations of RN mayors of Ñuñoa and Traiguén, Andrés Zarhi and Luis Álvarez, respectively, and RN councilmen of Las Condes, Limache and La Unión, Tomás Fuentes, Cynthia Marín and María Eugenia Márquez, respectively; and the July 2016 party resignation of RN senator Manuel José Ossandón.
^d Figures updated with, the July 2013 party resignation of UDI mayor of Santo Domingo Fernando Rodríguez Larraín; the January 2014 death of Yumbel mayor Camilo Cabezas (PH) and its subsequent replacement with independent councilman Jaime Gacitúa, who in turn was replaced with Fredy Winter from the UDI; the June 2015 party resignation of UDI councilman Francisco Vera; the October 2015 party resignation of UDI mayor of Rancagua Eduardo Soto; the November 2015 party resignations of UDI mayor of La Florida Rodolfo Carter and UDI councilman of Lo Barnechea Carlos Ward; and the May 2016 death of UDI mayor of Pinto Fernando Chávez.
^e A fusion of País (País) and the Progressive Party (Partido Progresista).
^f Figures updated with the September 2014 expulsion of Providencia councilman Rodrigo García Márquez from his party (PPD); the October 2015 party resignation of PPD councilman of Los Andes Julio Lobos; and the August 2016 party resignation of PPD regional advisor Teodoro Aguirre.
^g A fusion of the Independent Regionalist Party (Partido Regionalista Independiente) and the Patagonian Regional Democracy (Democracia Regional Patagónica).
^h Formerly known as ChileFirst (ChilePrimero).
ⁱ Figures updated with the October 2015 party resignations of PS mayors of San Vicente de Tagua Tagua, Los Lagos and Coltauco, Jaime González, Simón Mansilla and Rubén Jorquera, respectively; and the October 2016 party resignation of PS councilwoman for Valparaíso Paula Quintana.
^j Figures updated with the October 2015 party resignation of DC councilwoman of Concepción Alejandra Smith.
^k Before October 2015, known as Fuerza Pública ("Public Force").
^l A fusion of Citizen Power (Poder Ciudadano) and the Autonomous Left movement.
^m A fusion of Regional and Popular Front, Green North Regional Force, Social Agrarian Regionalist Independent Movement and We Are Aysén parties.

• Liberal Party (Partido Liberal) (existed 1849–1966)
• Conservative Party (Partido Conservador) (existed 1851–1949, 1953–1966)
• National Party (Partido Nacional) (existed 1857–1933)
• Radical Party (Partido Radical) (existed 1863–1973, 1987–1994)
• Democrat Party (Partido Demócrata) (existed 1887–1941)
• Democratic Party (Partido Democrático) (existed 1932–1960)
• National Socialist Movement of Chile (Movimiento Nacional Socialista de Chile) (existed 1932–1941)
• Socialist Democratic Party (Partido Democrático Socialista) (existed 1964–1965)
• Revolutionary Left Movement (Movimiento de Izquierda Revolucionaria or MIR) (existed legally 1965–1973, illegally or not legally constituted 1973-2008)
• National Party (Partido Nacional) (existed 1966–1973, 1983–1994)
• New Democratic Left (founded 1963)
• Popular Unitary Action Movement (Movimiento de Acción Popular Unitario or MAPU) (existed legally 1969–)
• Citizen Left (Izquierda Cristiana or Izquierda Ciudadana) (existed 1971–2018)
• Union of the Centrist Center (Unión de Centro Centro) (existed 1990–2002)
• National Alliance of Independents (Alianza Nacional de los Independientes)
• Regionalist Action Party of Chile (Partido de Acción Regionalista de Chile)
• Broad Social Movement (Movimiento Amplio Social)

• Broad Front (Frente Amplio), composed of:
  • Democratic Revolution (Revolución Democrática)
  • Liberal Party (Partido Liberal de Chile)
  • Equality Party (Partido Igualdad)
  • Humanist Party (Partido Humanista)
  • Green Ecologist Party (Partido Ecologista Verde)
  • Commons (Comunes)
• Chile Vamos, composed of:
  • Independent Democratic Union (Unión Demócrata Independiente)
  • National Renewal (Renovación Nacional)
  • Political Evolution (Evolución Política)
  • Independent Democratic Regionalist Party (Partido Regionalista Independiente Demócrata)
• Progressive Convergence (Convergencia Progresista), composed of:
  • Party for Democracy (Partido por la Democracia)
  • Radical Party (Partido Radical de Chile)
  • Socialist Party (Partido Socialista de Chile)
• Unit for the Change, composed of:
  • Communist Party (Partido Comunista de Chile)
  • Social Green Regionalist Federation (Federación Regionalista Verde Social)
  • Progressive País (País Progresista)

• Popular Front
• Democratic Alliance
• Unidad Popular
• Confederation of Democracy
• Concertación
• New Majority