Huesca is one of the 52 constituencies represented in the Congress of Deputies, the lower chamber of the Spanish parliament, the . The constituency (whose boundaries correspond to those of the homonymous province) currently elects three deputies. The electoral system uses the D'Hondt method and closed-list proportional voting, with a minimum threshold of three percent.

Electoral system The constituency was created as per the Political Reform Law and was first contested in the 1977 general election. The Law provided for the provinces of Spain to be established as multi-member districts in the Congress of Deputies,. with this regulation being maintained under the Spanish Constitution of 1978.. Additionally, the Constitution requires for any modification of the provincial limits to be approved under an organic law, needing an absolute majority in the Cortes Generales..

Voting is based on universal suffrage, comprising all Spanish nationals over 18 years of age with full political rights, provided that they have not been deprived of the right to vote by a final sentence.. The only exception was in 1977, when this was limited to nationals over 21 years of age and in full enjoyment of their political and civil rights.; . Amendments in 2011 required non-resident citizens to apply for voting, a system known as "begged" voting ().. which was abolished in 2022. Further, amendments in 2018 granted the right to vote to those legally incapacitated. The Congress of Deputies has a minimum of 300 and a maximum of 400 seats, with electoral provisions fixing its size at 350. Of these, 348 are elected in 50 multi-member constituencies corresponding to the provinces of Spain—each of which is assigned an initial minimum of two seats and the remaining 248 distributed in proportion to population—using the D'Hondt method and closed-list proportional voting, with a three percent-threshold of valid votes (including blank ballots) in each constituency. The remaining two seats are allocated to Ceuta and Melilla as single-member districts elected by plurality voting.; ; ; . The use of this electoral method may result in a higher effective threshold depending on district magnitude and vote distribution. The law does not provide for by-elections to fill vacant seats; instead, any vacancies arising after the proclamation of candidates and during the legislative term are filled by the next candidates on the party lists or, when required, by designated substitutes.; .

The electoral law allows for parties and federations registered in the interior ministry, alliances and groupings of electors to present lists of candidates. Parties and federations intending to form an alliance are required to inform the relevant electoral commission within 10 days of the election call—15 before 1985—whereas groupings of electors need to secure the signature of at least one percent of the electorate in the constituencies for which they seek election—one permille of the electorate, with a compulsory minimum of 500 signatures, until 1985—disallowing electors from signing for more than one list. Also since 2011, parties, federations or alliances that have not obtained a mandate in either chamber of the at the preceding election are required to secure the signature of at least 0.1 percent of electors in the aforementioned constituencies.; . Amendments in 2007 required a balanced composition of men and women in the electoral lists, so that candidates of either sex made up at least 40 percent of the total composition; further amendments in 2024 required the use of a zipper system..

Deputies Deputies 1977–present Legislature Election Distribution Constituent 1977 1 2 1st 1979 1 2 2nd 1982 2 1 3rd 1986 2 1 4th 1989 2 1 5th 1993 2 1 6th 1996 1 2 7th 2000 1 2 8th 2004 2 1 9th 2008 2 1 10th 2011 1 2 11th 2015 1 1 1 12th 2016 1 1 1 13th 2019 (Apr) 1 1 1 14th 2019 (Nov) 2 1 15th 2023 1 2

General elections 2023 + Summary of the 23 July 2023 Congress of Deputies election results in Huesca Parties and alliances Popular vote Seats Votes % ±pp Total +/− People's Party (PP) 45,783 38.19 +11.95 2 +1 Spanish Socialist Workers' Party (PSOE) 40,307 33.62 +0.08 1 –1 Vox (Vox) 15,155 12.64 –2.53 0 ±0 Unite Aragon (Sumar Aragón)1 13,774 11.49 –2.63 0 ±0 Aragon Exists–Exists Coalition (Existe) 1,312 1.09 New 0 ±0 Aragonese Party (PAR) 717 0.60 New 0 ±0 Animalist Party with the Environment (PACMA)2 498 0.42 –0.23 0 ±0 Blank Seats to Leave Empty Seats (EB) 475 0.40 +0.05 0 ±0 Workers' Front (FO) 258 0.22 New 0 ±0 Communist Party of the Workers of Spain (PCTE) 137 0.11 +0.03 0 ±0 For a Fairer World (PUM+J) 114 0.10 –0.03 0 ±0 Federation of Independents of Aragon (FIA) 84 0.07 ±0.00 0 ±0 Zero Cuts (Recortes Cero) 64 0.05 –0.12 0 ±0 Blank ballots 1,217 1.02 –0.18 Total 119,895 3 ±0 Valid votes 119,895 98.97 +0.01 Invalid votes 1,253 1.03 –0.01 Votes cast / turnout 121,148 69.87 +3.41 Abstentions 52,243 30.13 –3.41 Registered voters 173,391 Sources

November 2019 + Summary of the 10 November 2019 Congress of Deputies election results in Huesca Parties and alliances Popular vote Seats Votes % ±pp Total +/− Spanish Socialist Workers' Party (PSOE) 38,101 33.54 +0.54 2 +1 People's Party (PP) 29,804 26.24 +6.17 1 ±0 Vox (Vox) 17,237 15.17 +4.49 0 ±0 United We Can (Podemos–IU–AltoAragón en Común) 14,035 12.36 –1.33 0 ±0 Citizens–Party of the Citizenry (Cs) 9,244 8.14 –11.47 0 –1 Aragonese Union (CHA) 2,000 1.76 New 0 ±0 Animalist Party Against Mistreatment of Animals (PACMA) 735 0.65 –0.16 0 ±0 Blank Seats (EB) 393 0.35 –0.03 0 ±0 Zero Cuts–Green Group (Recortes Cero–GV) 198 0.17 –0.06 0 ±0 For a Fairer World (PUM+J) 153 0.13 –0.01 0 ±0 Communist Party of the Peoples of Spain (PCPE) 100 0.09 –0.08 0 ±0 Communist Party of the Workers of Spain (PCTE) 86 0.08 New 0 ±0 Federation of Independents of Aragon (FIA) 75 0.07 –0.03 0 ±0 Puyalón (PYLN) 73 0.06 –0.06 0 ±0 Blank ballots 1,363 1.20 +0.19 Total 113,597 3 ±0 Valid votes 113,597 98.96 +0.07 Invalid votes 1,194 1.04 –0.07 Votes cast / turnout 114,791 66.46 –6.94 Abstentions 57,931 33.54 +6.94 Registered voters 172,722 Sources

April 2019 + Summary of the 28 April 2019 Congress of Deputies election results in Huesca Parties and alliances Popular vote Seats Votes % ±pp Total +/− Spanish Socialist Workers' Party (PSOE) 41,354 33.00 +7.41 1 ±0 People's Party (PP) 25,149 20.07 –16.15 1 ±0 Citizens–Party of the Citizenry (Cs) 24,568 19.61 +4.27 1 +1 United We Can (Podemos–IU–Equo–AltoAragón en Común) 17,151 13.69 –5.50 0 –1 Vox (Vox) 13,389 10.68 +10.34 0 ±0 Animalist Party Against Mistreatment of Animals (PACMA) 1,013 0.81 +0.03 0 ±0 Blank Seats (EB) 474 0.38 –0.04 0 ±0 Zero Cuts–Green Group (Recortes Cero–GV) 284 0.23 +0.05 0 ±0 Communist Party of the Peoples of Spain (PCPE) 216 0.17 –0.13 0 ±0 For a Fairer World (PUM+J) 170 0.14 New 0 ±0 Puyalón (PYLN) 148 0.12 New 0 ±0 Federation of Independents of Aragon (FIA) 127 0.10 New 0 ±0 Blank ballots 1,271 1.01 –0.02 Total 125,314 3 ±0 Valid votes 125,314 98.89 –0.15 Invalid votes 1,406 1.11 +0.15 Votes cast / turnout 126,720 73.40 +5.40 Abstentions 45,924 26.60 –5.40 Registered voters 172,644 Sources

2016 + Summary of the 26 June 2016 Congress of Deputies election results in Huesca Parties and alliances Popular vote Seats Votes % ±pp Total +/− People's Party–Aragonese Party (PP–PAR) 42,332 36.22 +3.68 1 ±0 Spanish Socialist Workers' Party (PSOE) 29,915 25.59 +0.88 1 ±0 United We Can in Upper Aragon (Podemos–IU–Equo)1 22,430 19.19 –4.04 1 ±0 Citizens–Party of the Citizenry (C's) 17,934 15.34 –0.86 0 ±0 Animalist Party Against Mistreatment of Animals (PACMA) 909 0.78 +0.07 0 ±0 Blank Seats (EB) 487 0.42 –0.03 0 ±0 Vox (Vox) 399 0.34 New 0 ±0 Forward (Entabán) 377 0.32 New 0 ±0 Communist Party of the Peoples of Spain (PCPE) 349 0.30 +0.09 0 ±0 Union, Progress and Democracy (UPyD) 239 0.20 –0.48 0 ±0 Zero Cuts–Green Group (Recortes Cero–GV) 216 0.18 –0.02 0 ±0 Social Aragonese Movement (MAS) 93 0.08 New 0 ±0 Blank ballots 1,204 1.03 +0.01 Total 116,884 3 ±0 Valid votes 116,884 99.04 –0.03 Invalid votes 1,134 0.96 +0.03 Votes cast / turnout 118,018 68.00 –2.83 Abstentions 55,528 32.00 +2.83 Registered voters 173,546 Sources

2015 + Summary of the 20 December 2015 Congress of Deputies election results in Huesca Parties and alliances Popular vote Seats Votes % ±pp Total +/− People's Party–Aragonese Party (PP–PAR) 39,747 32.54 –15.93 1 –1 Spanish Socialist Workers' Party (PSOE) 30,183 24.71 –9.06 1 ±0 We Can–Now Upper Aragon in Common (Podemos–Ahora AltoAragón) 21,943 17.96 New 1 +1 Citizens–Party of the Citizenry (C's) 19,789 16.20 New 0 ±0 United Left–Aragonese Union–Popular Unity in Common (IU–CHA–UPeC) 6,433 5.27 –2.97 0 ±0 Union, Progress and Democracy (UPyD) 833 0.68 –3.81 0 ±0 Animalist Party Against Mistreatment of Animals (PACMA) 792 0.65 +0.19 0 ±0 Blank Seats (EB) 554 0.45 New 0 ±0 Communist Party of the Peoples of Spain (PCPE) 257 0.21 –0.08 0 ±0 Zero Cuts–Green Group (Recortes Cero–GV) 249 0.20 New 0 ±0 Independents for Aragon (i) 114 0.09 New 0 ±0 Blank ballots 1,251 1.02 –1.38 Total 122,145 3 ±0 Valid votes 122,145 99.07 +0.80 Invalid votes 1,152 0.93 –0.80 Votes cast / turnout 123,297 70.83 +1.01 Abstentions 50,775 29.17 –1.01 Registered voters 174,072 Sources

2011 + Summary of the 20 November 2011 Congress of Deputies election results in Huesca Parties and alliances Popular vote Seats Votes % ±pp Total +/− People's Party–Aragonese Party (PP–PAR)1 58,435 48.47 +5.81 2 +1 Spanish Socialist Workers' Party (PSOE) 40,721 33.77 –13.83 1 –1 Aragonese Union–United Left: Plural Left (CHA–IU)2 9,937 8.24 +2.42 0 ±0 Union, Progress and Democracy (UPyD) 5,408 4.49 +3.19 0 ±0 Equo (Equo) 1,471 1.22 New 0 ±0 Animalist Party Against Mistreatment of Animals (PACMA) 558 0.46 +0.32 0 ±0 Pirate Party (Pirata) 403 0.33 New 0 ±0 Communist Party of the Peoples of Spain (PCPE) 354 0.29 +0.24 0 ±0 For a Fairer World (PUM+J) 286 0.24 +0.17 0 ±0 Communist Unification of Spain (UCE) 107 0.09 New 0 ±0 Blank ballots 2,890 2.40 +1.07 Total 120,570 3 ±0 Valid votes 120,570 98.27 –1.15 Invalid votes 2,117 1.73 +1.15 Votes cast / turnout 122,687 69.82 –5.65 Abstentions 53,026 30.18 +5.65 Registered voters 175,713 Sources

2008 + Summary of the 9 March 2008 Congress of Deputies election results in Huesca Parties and alliances Popular vote Seats Votes % ±pp Total +/− Spanish Socialist Workers' Party (PSOE) 62,954 47.60 +1.94 2 ±0 People's Party (PP) 49,748 37.62 +0.13 1 ±0 Aragonese Party (PAR) 6,665 5.04 ±0.00 0 ±0 Aragonese Union (CHA) 3,892 2.94 –3.47 0 ±0 United Left (IU) 3,815 2.88 +0.17 0 ±0 Union, Progress and Democracy (UPyD) 1,719 1.30 New 0 ±0 The Greens–Green Group (LV–GV) 561 0.42 New 0 ±0 Anti-Bullfighting Party Against Mistreatment of Animals (PACMA) 179 0.14 New 0 ±0 Citizens for Blank Votes (CenB) 169 0.13 +0.02 0 ±0 Citizens–Party of the Citizenry (C's) 129 0.10 New 0 ±0 National Alliance (AN) 98 0.07 New 0 ±0 For a Fairer World (PUM+J) 95 0.07 New 0 ±0 Social Democratic Party–Federation of Independents of Aragon (PSD–FIA) 79 0.05 New 0 ±0 National Democracy (DN) 76 0.06 –0.11 0 ±0 Communist Party of the Peoples of Spain (PCPE) 65 0.05 –0.03 0 ±0 Spanish Phalanx of the CNSO (FE de las JONS) 61 0.05 +0.01 0 ±0 Aragon United Citizens Party (pCUA) 52 0.04 New 0 ±0 Family and Life Party (PFyV) 50 0.04 –0.01 0 ±0 Authentic Phalanx (FA) 38 0.03 +0.01 0 ±0 Humanist Party (PH) 30 0.02 –0.03 0 ±0 Spanish Alternative (AES) 21 0.02 New 0 ±0 Blank ballots 1,759 1.33 –0.62 Total 132,255 3 ±0 Valid votes 132,255 99.42 +0.09 Invalid votes 776 0.58 –0.09 Votes cast / turnout 133,031 75.47 –1.15 Abstentions 43,234 24.53 +1.15 Registered voters 176,265 Sources

2004