Legislative elections were held in Argentina on 22 October 2017 to elect half of the Chamber of Deputies and one third of the Senate. The result was a victory for the ruling Cambiemos alliance, being the most voted force in 13 of the 24 districts.

Background The elections took place during the presidency of Mauricio Macri whose Cambiemos coalition also governed the City of Buenos Aires and Buenos Aires Province. As Cambiemos was a new coalition with few noteworthy political figures, several members of the cabinet were asked to resign from their positions and run for Congress in their respective districts instead.

Peronist factions were divided in two main groups; the Citizen's Unity, led by the former president Cristina Kirchner, led the parliamentary opposition to Macri's administration. Another group was composed of politicians from the Justicialist Party and the Renewal Front.

Electoral system

Chamber of Deputies The 257 members of the Chamber of Deputies are elected by proportional representation in 24 multi-member constituencies based on the provinces (plus the City of Buenos Aires). Seats are allocated using the d'Hondt method with a 3% electoral threshold.Electoral system Inter-Parliamentary Union In this election, 127 of the 257 seats are up for renewal for a four-year term.

Province Seats Seatsat stake Buenos Aires 70 35 City of Buenos Aires 25 13 Catamarca 5 3 Chaco 7 4 Chubut 5 2 Córdoba 18 9 Corrientes 7 3 Entre Ríos 9 5 Formosa 5 2 Jujuy 6 3 La Pampa 5 3 La Rioja 5 2 Mendoza 10 5 Misiones 7 3 Neuquén 5 3 Río Negro 5 2 Salta 7 3 San Juan 6 3 San Luis 5 3 Santa Cruz 5 3 Santa Fe 19 9 Santiago del Estero 7 3 Tierra del Fuego 5 2 Tucumán 9 4 Total 257 127

Outgoing Deputies Province Deputy Party Buenos Aires Federal Unidos por una Nueva Argentina Buenos Aires Radical Civic Union Buenos Aires Federal Unidos por una Nueva Argentina Buenos Aires Front for Victory-PJ Buenos Aires Peronismo para la Victoria Buenos Aires Juntos por Argentina Buenos Aires Front for Victory-PJ Buenos Aires Front for Victory-PJ Buenos Aires Federal Unidos por una Nueva Argentina Buenos Aires Federal Unidos por una Nueva Argentina Buenos Aires Federal Unidos por una Nueva Argentina Buenos Aires Front for Victory-PJ Buenos Aires Front for Victory-PJ Buenos Aires Federal Unidos por una Nueva Argentina Buenos Aires Juntos por Argentina Buenos Aires Front for Victory-PJ Buenos Aires Izquierda Socialista-Frente de Izquierda Buenos Aires Juntos por Argentina Buenos Aires Front for Victory-PJ Buenos Aires Radical Civic Union Buenos Aires Frente Norte Buenos Aires Front for Victory-PJ Buenos Aires Federal Unidos por una Nueva Argentina Buenos Aires Unión PRO Buenos Aires Federal Unidos por una Nueva Argentina Buenos Aires Front for Victory-PJ Buenos Aires Cultura, Educación y Trabajo Buenos Aires Front for Victory-PJ Buenos Aires Justicialist Buenos Aires Unidos por una Nueva Argentina Buenos Aires Federal Unidos por una Nueva Argentina Buenos Aires Federal Unidos por una Nueva Argentina Buenos Aires Generation for a National Encounter Buenos Aires Socialist Party Buenos Aires Federal Unidos por una Nueva Argentina City of Buenos Aires Proyecto Sur City of Buenos Aires Unión PRO City of Buenos Aires Front for Victory-PJ City of Buenos Aires Civic Coalition City of Buenos Aires Radical Civic Union City of Buenos Aires Unión PRO City of Buenos Aires Solidario Sí City of Buenos Aires Unión PRO City of Buenos Aires Front for Victory-PJ City of Buenos Aires Unión PRO City of Buenos Aires Diálogo y Trabajo City of Buenos Aires Civic Coalition City of Buenos Aires Unión PRO Catamarca Civic and Social Front of Catamarca Catamarca Civic and Social Front of Catamarca Catamarca Justicialist Chaco Justicialist Chaco Front for Victory-PJ Chaco Front for Victory-PJ Chaco Civic Coalition Chubut Trabajo y Dignidad Chubut Trabajo y Dignidad Córdoba Radical Civic Union Córdoba Unión PRO Córdoba Brigadier General Juan Bautista Bustos Córdoba Unidos por una Nueva Argentina Córdoba Unidos por una Nueva Argentina Córdoba Radical Civic Union Córdoba Peronismo para la Victoria Córdoba Radical Civic Union Córdoba Unidos por una Nueva Argentina Corrientes Justicialist Corrientes Radical Civic Union Corrientes Radical Civic Union Entre Ríos Front for Victory-PJ Entre Ríos Unión por Entre Ríos Entre Ríos Radical Civic Union Entre Ríos Front for Victory-PJ Entre Ríos Front for Victory-PJ Formosa Front for Victory-PJ Formosa Socialist Party Jujuy Radical Civic Union Jujuy Radical Civic Union Jujuy Justicialist La Pampa Justicialist La Pampa Unión PRO La Pampa Radical Civic Union La Rioja Justicialist La Rioja Radical Civic Union Mendoza Front for Victory-PJ Mendoza Freemen of the South Mendoza Radical Civic Union Mendoza Radical Civic Union Mendoza Workers' Left Front Misiones Radical Civic Union Misiones Frente Renovador de la Concordia Misiones Libertad, Valores y Cambio Neuquén Front for Victory-PJ Neuquén Neuquén People's Movement Neuquén Neuquén People's Movement Río Negro Front for Victory-PJ Río Negro Front for Victory-PJ Salta Unión PRO Salta Justicialist Salta Workers' Left Front San Juan Unión PRO San Juan Front for Victory-PJ San Juan Front for Victory-PJ San Luis Federal Commitment San Luis Federal Commitment San Luis Radical Civic Union Santa Cruz Radical Civic Union Santa Cruz Front for Victory-PJ Santa Cruz Radical Civic Union Santa Fe Radical Civic Union Santa Fe Socialist Party Santa Fe Socialist Party Santa Fe Democratic Progressive Party Santa Fe Front for Victory-PJ Santa Fe Unión PRO Santa Fe Unión PRO Santa Fe Front for Victory-PJ Santa Fe Unión PRO Santiago del Estero Civic Front for Santiago Santiago del Estero Civic Front for Santiago Santiago del Estero Civic Front for Santiago Tierra del Fuego Movimiento Solidario Popular Tierra del Fuego Front for Victory-PJ Tucumán Front for Victory-PJ Tucumán Del Bicentenario Tucumán Front for Victory-PJ Tucumán Freemen of the South

Senate

The 72 members of the Senate are elected in the same 24 constituencies, with three seats in each. The party receiving the most votes in each constituency wins two seats, with the third seat awarded to the second-placed party.Electoral system Inter-Parliamentary Union The 2017 elections will see one-third of Senators renewed, with eight provinces electing three Senators; Buenos Aires, Formosa, Jujuy, La Rioja, Misiones, San Juan, San Luis and Santa Cruz.

Outgoing Senators Province Senator Party Buenos Aires PJ-Front for Victory Buenos Aires PJ-Front for Victory Buenos Aires Generation for a National Encounter Formosa PJ-Front for Victory Formosa PJ-Front for Victory Formosa Radical Civic Union Jujuy PJ-Front for Victory Jujuy PJ-Front for Victory Jujuy Radical Civic Union La Rioja PJ-Front for Victory La Rioja PJ-Front for Victory La Rioja Federalismo y Liberación Misiones PJ-Front for Victory Misiones Misiones Misiones PJ-Front for Victory San Juan Production and Labour San Juan PJ-Front for Victory San Juan PJ-Front for Victory San Luis Justicialista San Luis San Luis PJ-Front for Victory San Luis Justicialista San Luis Santa Cruz PJ-Front for Victory Santa Cruz PJ-Front for Victory Santa Cruz Radical Civic Union

Schedule

The timetable for the different national electoral acts was established on the following dates:

25 April: Closure of the provisional electoral register. 5 May: Publication of the provisional electoral register. 20 May: Deadline to correct the electoral register. 14 June: Deadline to register the alliances. 24 June: Deadline to register the pre-nominations for the primary elections (PASO). 14 July: Beginning of the electoral campaign for the PASO and publication of the definitive electoral register. 21 July: Beginning of the prohibition of the broadcast of advertisements to capture the vote. 29 July: Beginning of the prohibition of public acts (inaugurations, announcements) by the government until the PASO. 11 August: Beginning of the election silence. 13 August: Primary elections (PASO). 17 September: Start of the election campaign for the national elections. 27 September: Beginning of the prohibition to broadcast advertising to capture the vote. 7 October: Beginning of the prohibition of public acts (inaugurations, announcements) by the government, until the elections. 14 October: Beginning of the prohibition to publish opinion polls. 20 October: Beginning of the election silence. 22 October: National legislative elections.

Results Chamber of Deputies

Results by province ProvinceLet's ChangeCitizen's UnityJusticialist Front1CountryOthers Votes % Seats Votes % Seats Votes % Seats Votes % Seats Votes % SeatsBuenos Aires3,930,40642.1515 3,383,114 36.2813 485,138 5.201 1,028,385 11.034 497,665 5.342Buenos Aires City982,86750.988 419,176 21.743——— 93,980 4.87— 431,805 22.402Catamarca 83,937 41.861 11,935 5.95—95,92747.842——— 8,715 4.35—Chaco271,11041.792 69,786 10.76— 257,053 39.622 18,615 2.87— 32,220 4.97—Chubut 95,266 31.161 73,026 23.88———————137,46344.961Córdoba996,95048.485 199,683 9.711 626,887 30.483——— 232,875 11.32—Corrientes317,90055.432 146,730 25.581——— 85,135 14.84— 23,790 4.15—Entre Ríos437,96253.023——— 313,605 37.972——— 74,466 9.01—Formosa 119,865 36.581202,81761.891—————— 5,005 1.53—Jujuy185,25351.732——— 70,818 19.781 33,859 9.46— 68,171 19.04—La Pampa 96,045 45.391———96,12145.422——— 19,444 9.19—La Rioja85,68544.781 4,423 2.31— 84,477 44.151 9,176 4.80— 7,597 3.97—Mendoza491,01245.733——— 272,552 25.381——— 310,126 28.881Misiones 211,164 33.611268,64642.762——— 26,224 4.17— 122,241 19.46—Neuquén106,82128.211 73,310 19.361——— 6,879 1.82— 191,685 50.621Río Negro 122,838 31.991189,55749.361—————— 71,619 18.65—Salta211,37730.251 179,295 25.661 170,759 24.441——— 137,387 19.66—San Juan 132,820 31.491———226,42553.682 20,379 4.83— 42,200 10.00—San Luis 123,994 43.011———158,57355.002——— 5,722 1.98—Santa Cruz72,75943.912 52,953 31.961——— 6,890 4.16— 33,105 19.98—Santa Fe743,13937.805 509,190 25.903——— 87,955 4.47— 625,781 31.831Santiago del Estero 94,968 17.33—384,12570.093——— 50,081 9.14— 18,842 3.44—Tierra del Fuego 27,654 29.77127,82529.961 21,595 23.25———— 15,813 17.02—Tucumán 319,615 32.562———460,19846.892——— 201,693 20.55— Total 10,261,407 41.75 61 6,195,591 25.21 32 3,340,128 13.59 22 1,467,558 5.97 4 3,315,430 13.49 8

Senate

Results by province ProvinceLet's ChangeCitizen's Unity1CountryJusticialist FrontOthers Votes % Seats Votes % Seats Votes % Seats Votes % Seats Votes % SeatsBuenos Aires3,912,52641.352 3,529,900 37.311 1,069,747 11.31— 500,945 5.29— 448,933 4.74—Formosa 121,520 37.121201,97261.692—————— 3,899 1.19—Jujuy189,85852.602——— 33,997 9.42— 75,062 20.801 62,039 17.19—La Rioja91,30748.022 4,741 2.49———— 86,518 45.501 7,565 3.98—Misiones 210,956 33.281271,05142.762 24,435 3.85———— 127,482 20.11—San Juan 134,742 32.311——— 19,446 4.66—227,50354.552 35,364 8.48—San Luis 130,165 42.941——————168,16755.482 4,796 1.58—Santa Cruz73,81244.122 53,646 32.071 7,032 4.20———— 32,794 19.60— Total 4,864,886 41.01 12 4,061,310 34.24 6 1,154,657 9.73 0 1,058,195 8.92 6 722,872 6.09 0

References