Burgos 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 four 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 3 1st 1979 1 3 2nd 1982 2 2 3rd 1986 2 2 4th 1989 2 2 5th 1993 2 2 6th 1996 1 3 7th 2000 1 3 8th 2004 2 2 9th 2008 2 2 10th 2011 1 3 11th 2015 1 1 2 12th 2016 1 1 2 13th 2019 (Apr) 2 1 1 14th 2019 (Nov) 2 2 15th 2023 2 2

General elections 2023 + Summary of the 23 July 2023 Congress of Deputies election results in Burgos Parties and alliances Popular vote Seats Votes % ±pp Total +/− People's Party (PP) 82,329 40.64 +9.87 2 ±0 Spanish Socialist Workers' Party (PSOE) 69,775 34.45 +2.19 2 ±0 Vox (Vox) 25,858 12.77 –2.10 0 ±0 Unite (Sumar)1 17,508 8.64 –2.45 0 ±0 Burgalese Way (VB) 1,774 0.88 New 0 ±0 Empty Spain–Castilian Party–Commoners' Land (EV–PCAS–TC) 1,184 0.58 New 0 ±0 Animalist Party with the Environment (PACMA)2 943 0.47 –0.24 0 ±0 Workers' Front (FO) 490 0.24 New 0 ±0 For a Fairer World (PUM+J) 354 0.17 –0.14 0 ±0 Communist Party of the Workers of Spain (PCTE) 349 0.17 –0.03 0 ±0 Zero Cuts (Recortes Cero) 154 0.08 –0.24 0 ±0 Blank ballots 1,851 0.91 –0.41 Total 202,569 4 ±0 Valid votes 202,569 98.87 +0.21 Invalid votes 2,317 1.13 –0.21 Votes cast / turnout 204,886 69.12 +1.67 Abstentions 91,515 30.88 –1.67 Registered voters 296,401 Sources

November 2019 + Summary of the 10 November 2019 Congress of Deputies election results in Burgos Parties and alliances Popular vote Seats Votes % ±pp Total +/− Spanish Socialist Workers' Party (PSOE) 64,182 32.26 +2.98 2 ±0 People's Party (PP) 61,228 30.77 +6.21 2 +1 Vox (Vox) 29,579 14.87 +3.76 0 ±0 United We Can (Podemos–IU) 22,058 11.09 –1.41 0 ±0 Citizens–Party of the Citizenry (Cs) 16,214 8.15 –11.68 0 –1 Animalist Party Against Mistreatment of Animals (PACMA) 1,415 0.71 –0.19 0 ±0 Zero Cuts–Green Group–PCAS–TC (Recortes Cero–GV–PCAS–TC) 645 0.32 –0.01 0 ±0 For a Fairer World (PUM+J) 620 0.31 +0.04 0 ±0 Communist Party of the Workers of Spain (PCTE) 404 0.20 +0.01 0 ±0 Blank ballots 2,626 1.32 +0.28 Total 198,971 4 ±0 Valid votes 198,971 98.66 +0.02 Invalid votes 2,693 1.34 –0.02 Votes cast / turnout 201,664 67.45 –6.91 Abstentions 97,325 32.55 +6.91 Registered voters 298,989 Sources

April 2019 + Summary of the 28 April 2019 Congress of Deputies election results in Burgos Parties and alliances Popular vote Seats Votes % ±pp Total +/− Spanish Socialist Workers' Party (PSOE) 64,287 29.28 +7.19 2 +1 People's Party (PP) 53,926 24.56 –18.34 1 –1 Citizens–Party of the Citizenry (Cs) 43,533 19.83 +5.16 1 +1 United We Can (Podemos–IU–Equo) 27,436 12.50 –4.75 0 –1 Vox (Vox) 24,382 11.11 +10.80 0 ±0 Animalist Party Against Mistreatment of Animals (PACMA) 1,981 0.90 +0.04 0 ±0 Zero Cuts–Green Group–PCAS–TC (Recortes Cero–GV–PCAS–TC) 715 0.33 +0.11 0 ±0 For a Fairer World (PUM+J) 597 0.27 New 0 ±0 Communist Party of the Workers of Spain (PCTE) 421 0.19 New 0 ±0 Blank ballots 2,275 1.04 +0.16 Total 219,553 4 ±0 Valid votes 219,553 98.64 –0.28 Invalid votes 3,027 1.36 +0.28 Votes cast / turnout 222,580 74.36 +4.67 Abstentions 76,757 25.64 –4.67 Registered voters 299,337 Sources

2016 + Summary of the 26 June 2016 Congress of Deputies election results in Burgos Parties and alliances Popular vote Seats Votes % ±pp Total +/− People's Party (PP) 88,785 42.90 +4.88 2 ±0 Spanish Socialist Workers' Party (PSOE) 45,724 22.09 +1.40 1 ±0 United We Can (Podemos–IU–Equo)1 35,705 17.25 –4.52 1 ±0 Citizens–Party of the Citizenry (C's) 30,361 14.67 –0.88 0 ±0 Animalist Party Against Mistreatment of Animals (PACMA) 1,782 0.86 +0.20 0 ±0 Union, Progress and Democracy (UPyD) 788 0.38 –0.71 0 ±0 Vox (Vox) 647 0.31 –0.12 0 ±0 Zero Cuts–Green Group (Recortes Cero–GV) 456 0.22 +0.01 0 ±0 Merindades of Castile Initiative (IMC) 356 0.17 New 0 ±0 Communist Party of the Peoples of Spain (PCPE) 287 0.14 –0.09 0 ±0 Internationalist Solidarity and Self-Management (SAIn) 278 0.13 –0.10 0 ±0 Blank ballots 1,812 0.88 –0.07 Total 206,981 4 ±0 Valid votes 206,981 98.92 –0.05 Invalid votes 2,265 1.08 +0.05 Votes cast / turnout 209,246 69.69 –2.75 Abstentions 90,997 30.31 +2.75 Registered voters 300,243 Sources

2015 + Summary of the 20 December 2015 Congress of Deputies election results in Burgos Parties and alliances Popular vote Seats Votes % ±pp Total +/− People's Party (PP) 82,037 38.02 –16.19 2 –1 Spanish Socialist Workers' Party (PSOE) 44,640 20.69 –7.28 1 ±0 We Can (Podemos) 36,818 17.06 New 1 +1 Citizens–Party of the Citizenry (C's) 33,558 15.55 New 0 ±0 United Left–Popular Unity in Common (IU–UPeC) 10,171 4.71 –0.84 0 ±0 Union, Progress and Democracy (UPyD) 2,356 1.09 –6.43 0 ±0 Animalist Party Against Mistreatment of Animals (PACMA) 1,431 0.66 +0.19 0 ±0 Vox (Vox) 926 0.43 New 0 ±0 Communist Party of the Peoples of Spain (PCPE) 507 0.23 New 0 ±0 Internationalist Solidarity and Self-Management (SAIn) 501 0.23 +0.02 0 ±0 Zero Cuts–Green Group (Recortes Cero–GV) 452 0.21 New 0 ±0 Feminist Initiative (IFem) 341 0.16 New 0 ±0 Blank ballots 2,049 0.95 –0.90 Total 215,787 4 ±0 Valid votes 215,787 98.97 +0.46 Invalid votes 2,250 1.03 –0.46 Votes cast / turnout 218,037 72.44 +0.74 Abstentions 82,948 27.56 –0.74 Registered voters 300,985 Sources

2011 + Summary of the 20 November 2011 Congress of Deputies election results in Burgos Parties and alliances Popular vote Seats Votes % ±pp Total +/− People's Party (PP) 116,057 54.21 +3.70 3 +1 Spanish Socialist Workers' Party (PSOE) 59,878 27.97 –12.49 1 –1 Union, Progress and Democracy (UPyD) 16,090 7.52 +5.41 0 ±0 United Left of Castile and León: Plural Left (IUCyL) 11,892 5.55 +2.66 0 ±0 Equo (Equo) 1,938 0.91 New 0 ±0 Party of Castile and León (PCAL)1 1,515 0.71 –0.06 0 ±0 Animalist Party Against Mistreatment of Animals (PACMA) 1,007 0.47 +0.28 0 ±0 For a Fairer World (PUM+J) 605 0.28 +0.18 0 ±0 Anti-capitalists (Anticapitalistas) 502 0.23 New 0 ±0 Internationalist Solidarity and Self-Management (SAIn) 454 0.21 +0.11 0 ±0 Citizens of Democratic Centre (CCD) 203 0.09 New 0 ±0 Blank ballots 3,952 1.85 +0.46 Total 214,093 4 ±0 Valid votes 214,093 98.51 –0.94 Invalid votes 3,235 1.49 +0.94 Votes cast / turnout 217,328 71.70 –5.75 Abstentions 85,781 28.30 +5.75 Registered voters 303,109 Sources

2008 + Summary of the 9 March 2008 Congress of Deputies election results in Burgos Parties and alliances Popular vote Seats Votes % ±pp Total +/− People's Party (PP) 117,613 50.51 –1.45 2 ±0 Spanish Socialist Workers' Party (PSOE) 94,202 40.46 +1.53 2 ±0 United Left–Alternative (IU) 6,735 2.89 –0.38 0 ±0 Union, Progress and Democracy (UPyD) 4,922 2.11 New 0 ±0 Commoners' Land (TC) 1,790 0.77 –0.60 0 ±0 The Greens–Green Group (LV–GV) 774 0.33 –0.34 0 ±0 The Greens of Europe (LVdE) 467 0.20 New 0 ±0 Anti-Bullfighting Party Against Mistreatment of Animals (PACMA) 444 0.19 New 0 ±0 National Democracy (DN) 332 0.14 +0.08 0 ±0 Social Democratic Party (PSD) 281 0.12 New 0 ±0 Citizens for Blank Votes (CenB) 261 0.11 –0.30 0 ±0 For a Fairer World (PUM+J) 242 0.10 New 0 ±0 Internationalist Solidarity and Self-Management (SAIn) 223 0.10 New 0 ±0 Merindades of Castile Initiative (IMC) 202 0.09 New 0 ±0 Communist Party of the Peoples of Spain (PCPE) 170 0.07 ±0.00 0 ±0 Citizens–Party of the Citizenry (C's) 127 0.05 New 0 ±0 Alliance for Burgos (AxB) 123 0.05 New 0 ±0 Spanish Phalanx of the CNSO (FE de las JONS) 117 0.05 ±0.00 0 ±0 Burgalese Citizen Initiative (ICBur) 109 0.05 New 0 ±0 Authentic Phalanx (FA) 106 0.05 +0.02 0 ±0 Family and Life Party (PFyV) 99 0.04 –0.06 0 ±0 Citizen Group (AGRUCI) 79 0.03 New 0 ±0 Humanist Party (PH) 58 0.02 –0.06 0 ±0 Spanish Alternative (AES) 51 0.02 New 0 ±0 Spain 2000 (E–2000) 45 0.02 New 0 ±0 Carlist Party (PC) 43 0.02 –0.01 0 ±0 Blank ballots 3,236 1.39 –1.18 Total 232,851 4 ±0 Valid votes 232,851 99.45 +0.16 Invalid votes 1,279 0.55 –0.16 Votes cast / turnout 234,130 77.45 –0.82 Abstentions 68,172 22.55 +0.82 Registered voters 302,302 Sources

2004