Soria is one of the nine constituencies () represented in the Cortes of Castile and León, the regional legislature of the Autonomous Community of Castile and León. The constituency currently elects five deputies. Its boundaries correspond to those of the Spanish province of Soria. The electoral system uses the D'Hondt method and closed-list proportional representation, with a minimum threshold of three percent.

Electoral system The constituency was created as per the Statute of Autonomy of Castile and León of 1983 and was first contested in the 1983 regional election. The Statute provided for the nine provinces in Castile and León—Ávila, Burgos, León, Palencia, Salamanca, Segovia, Soria, Valladolid and Zamora—to be established as multi-member districts in the Cortes of Castile and León, with this regulation being maintained under the 1987 regional electoral law. Each constituency is entitled to an initial minimum of three seats, with one additional member per each 45,000 inhabitants or fraction greater than 22,500.

Voting is on the basis of universal suffrage, which comprises all nationals over eighteen, registered in Castile and León and in full enjoyment of their political rights. Amendments to the electoral law in 2011 required for Castilian-Leonese people abroad to apply for voting before being permitted to vote, a system known as "begged" or expat vote () which was abolished in 2022. Seats are elected using the D'Hondt method and a closed list proportional representation, with an electoral threshold of three percent of valid votes—which includes blank ballots—being applied in each constituency. The use of the D'Hondt method might result in a higher effective threshold, depending on the district magnitude.

The electoral law allows for parties and federations registered in the interior ministry, coalitions and groupings of electors to present lists of candidates. Parties and federations intending to form a coalition ahead of an election are required to inform the relevant Electoral Commission within ten days of the election call—fifteen 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-thousandth of the electorate, with a compulsory minimum of 500 signatures, until 1985—disallowing electors from signing for more than one list of candidates.

Procurators Procurators 1983–present Cortes Election Distribution 1st 1983 2 3 2nd 1987 2 1 2 3rd 1991 2 3 4th 1995 1 4 5th 1999 2 3 6th 2003 2 3 7th 2007 2 3 8th 2011 2 3 9th 2015 2 3 10th 2019 3 2 11th 2022 1 3 1 12th 2026 2 1 1 1

Regional elections 2026 + Summary of the 15 March 2026 Cortes of Castile and León election results in Soria Parties and alliances Popular vote Seats Votes % ±pp Total +/− Spanish Socialist Workers' Party (PSOE) 14,766 32.18 +14.12 2 +1 People's Party (PP) 13,114 28.58 +4.73 1 ±0 Soria Now! (SY) 9,145 19.93 −22.79 1 −2 Vox (Vox) 7,264 15.83 +4.36 1 +1 The Party is Over (SALF) 378 0.82 New 0 ±0 United Left, Unite Movement, Greens Equo: In Common (IU–MS–VQ)1 256 0.56 n/a 0 ±0 We Can–Green Alliance CyL 2026 (Podemos–AV)1 252 0.55 n/a 0 ±0 Blank Seats to Leave Empty Seats (EB) 94 0.20 New 0 ±0 Nine Castile and León (NueveCyL) 74 0.16 New 0 ±0 Animalist Party with the Environment (PACMA)2 71 0.15 −0.05 0 ±0 Citizens–Party of the Citizenry (Cs) 49 0.11 −0.66 0 ±0 Castilian Party–Commoners' Land (PCAS–TC) 44 0.10 +0.01 0 ±0 Blank ballots 379 0.83 +0.32 Total 45,886 5 ±0 Valid votes 45,886 99.23 −0.25 Invalid votes 354 0.77 +0.25 Votes cast / turnout 46,240 60.39 +0.58 Abstentions 30,335 39.61 −0.58 Registered voters 76,575 Sources

2022 + Summary of the 13 February 2022 Cortes of Castile and León election results in Soria Parties and alliances Popular vote Seats Votes % ±pp Total +/− Soria Now! (SY) 19,385 42.72 New 3 +3 People's Party (PP) 10,822 23.85 –3.77 1 –1 Spanish Socialist Workers' Party (PSOE) 8,193 18.06 –22.67 1 –2 Vox (Vox) 5,204 11.47 +7.20 0 ±0 United We Can Castile and León (Podemos–IU–AV)1 1,020 2.25 –4.00 0 ±0 Citizens–Party of the Citizenry (Cs) 351 0.77 –10.50 0 ±0 Animalist Party Against Mistreatment of Animals (PACMA) 89 0.20 –0.30 0 ±0 Castilian Party–Commoners' Land–Zero Cuts (PCAS–TC–RC) 41 0.09 New 0 ±0 Progress Party of Castile and León Cities (PPCCAL) 23 0.05 New 0 ±0 For a Fairer World (PUM+J) 13 0.03 New 0 ±0 Blank ballots 232 0.51 –0.84 Total 45,373 5 ±0 Valid votes 45,373 99.48 +0.54 Invalid votes 239 0.52 –0.54 Votes cast / turnout 45,612 59.81 –4.12 Abstentions 30,645 40.19 +4.12 Registered voters 76,257 Sources

2019 + Summary of the 26 May 2019 Cortes of Castile and León election results in Soria Parties and alliances Popular vote Seats Votes % ±pp Total +/− Spanish Socialist Workers' Party (PSOE) 19,794 40.73 +9.56 3 +1 People's Party (PP) 13,423 27.62 –9.23 2 –1 Citizens–Party of the Citizenry (Cs) 5,476 11.27 –0.87 0 ±0 Sorian People's Platform (PPSO) 3,895 8.01 New 0 ±0 We Can–Equo (Podemos–Equo) 2,464 5.07 –6.94 0 ±0 Vox (Vox) 2,075 4.27 New 0 ±0 United Left–Anticapitalists (IU–Anticapitalistas–PCAS/TC–ALTER)1 575 1.18 –2.23 0 ±0 Animalist Party Against Mistreatment of Animals (PACMA) 244 0.50 New 0 ±0 Blank ballots 657 1.35 –2.12 Total 48,603 5 ±0 Valid votes 48,603 98.94 +1.44 Invalid votes 519 1.06 –1.44 Votes cast / turnout 49,122 63.93 +0.19 Abstentions 27,716 36.07 –0.19 Registered voters 76,838 Sources

2015 + Summary of the 24 May 2015 Cortes of Castile and León election results in Soria Parties and alliances Popular vote Seats Votes % ±pp Total +/− People's Party (PP) 17,712 36.85 –15.16 3 ±0 Spanish Socialist Workers' Party (PSOE) 14,978 31.17 –1.76 2 ±0 Citizens–Party of the Citizenry (C's) 5,834 12.14 New 0 ±0 We Can (Podemos) 5,772 12.01 New 0 ±0 United Left–Equo: Convergence for Castile and León (IU–Equo) 1,368 2.85 –0.25 0 ±0 Union, Progress and Democracy (UPyD) 460 0.96 New 0 ±0 Castilian Party–Commoners' Land: Pact (PCAS–TC–Pacto) 270 0.56 –0.08 0 ±0 Blank ballots 1,666 3.47 –1.66 Total 48,060 5 ±0 Valid votes 48,060 97.50 –0.20 Invalid votes 1,234 2.50 +0.20 Votes cast / turnout 49,294 63.74 –3.20 Abstentions 28,042 36.26 +3.20 Registered voters 77,336 Sources

2011 + Summary of the 22 May 2011 Cortes of Castile and León election results in Soria Parties and alliances Popular vote Seats Votes % ±pp Total +/− People's Party (PP) 26,264 52.01 +1.64 3 ±0 Spanish Socialist Workers' Party (PSOE) 16,630 32.93 –3.76 2 ±0 Initiative for the Development of Soria (IDES) 2,680 5.31 –1.68 0 ±0 United Left of Castile and León (IUCyL) 1,565 3.10 +1.40 0 ±0 Party of Castile and León (PCAL)1 323 0.64 +0.20 0 ±0 Anti-Bullfighting Party Against Mistreatment of Animals (PACMA) 256 0.51 New 0 ±0 Communist Unification of Spain (UCE) 187 0.37 New 0 ±0 Blank ballots 2,590 5.13 +2.36 Total 50,495 5 ±0 Valid votes 50,495 97.70 –1.26 Invalid votes 1,189 2.30 +1.26 Votes cast / turnout 51,684 66.94 –3.05 Abstentions 25,523 33.06 +3.05 Registered voters 77,207 Sources

2007 + Summary of the 27 May 2007 Cortes of Castile and León election results in Soria Parties and alliances Popular vote Seats Votes % ±pp Total +/− People's Party (PP) 27,078 50.37 –3.00 3 ±0 Spanish Socialist Workers' Party (PSOE) 19,727 36.69 +0.07 2 ±0 Initiative for the Development of Soria (IDES) 3,760 6.99 +3.54 0 ±0 United Left–The Greens–Commitment for Castile and León (IU–LV–CyL) 912 1.70 –0.39 0 ±0 The Greens (LV) 352 0.65 New 0 ±0 Commoners' Land–Alternative for Castile and León (TC–ACAL) 235 0.44 –0.11 0 ±0 Republican Left (IR) 209 0.39 +0.10 0 ±0 Blank ballots 1,489 2.77 –0.60 Total 53,762 5 ±0 Valid votes 53,762 98.96 +0.19 Invalid votes 565 1.04 –0.19 Votes cast / turnout 54,327 69.99 –1.54 Abstentions 23,289 30.01 +1.54 Registered voters 77,616 Sources

2003 + Summary of the 25 May 2003 Cortes of Castile and León election results in Soria Parties and alliances Popular vote Seats Votes % ±pp Total +/− People's Party (PP) 29,534 53.37 –3.33 3 ±0 Spanish Socialist Workers' Party (PSOE) 20,265 36.62 +4.56 2 ±0 Initiative for the Development of Soria (IDES) 1,908 3.45 New 0 ±0 United Left of Castile and León (IUCyL) 1,155 2.09 –3.74 0 ±0 Commoners' Land–Castilian Nationalist Party (TC–PNC) 306 0.55 –0.29 0 ±0 Republican Left (IR) 162 0.29 New 0 ±0 Castilian Left (IzCa) 142 0.26 New 0 ±0 Blank ballots 1,864 3.37 –0.50 Total 55,336 5 ±0 Valid votes 55,336 98.77 +0.10 Invalid votes 689 1.23 –0.10 Votes cast / turnout 56,025 71.53 +7.14 Abstentions 22,304 28.47 –7.14 Registered voters 78,329 Sources

1999 + Summary of the 13 June 1999 Cortes of Castile and León election results in Soria Parties and alliances Popular vote Seats Votes % ±pp Total +/− People's Party (PP) 28,701 56.70 –2.51 3 –1 Spanish Socialist Workers' Party (PSOE) 16,227 32.06 +3.71 2 +1 United Left of Castile and León (IUCyL) 2,949 5.83 –2.33 0 ±0 Commoners' Land–Castilian Nationalist Party (TC–PNC) 424 0.84 +0.35 0 ±0 Regionalist Unity of Castile and León (URCL) 362 0.72 New 0 ±0 Blank ballots 1,957 3.87 +1.05 Total 50,620 5 ±0 Valid votes 50,620 98.67 –0.16 Invalid votes 684 1.33 +0.16 Votes cast / turnout 51,304 64.39 –4.96 Abstentions 28,373 35.61 +4.96 Registered voters 79,677 Sources

1995 + Summary of the 28 May 1995 Cortes of Castile and León election results in Soria Parties and alliances Popular vote Seats Votes % ±pp Total +/− People's Party (PP) 32,089 59.21 +6.94 4 +1 Spanish Socialist Workers' Party (PSOE) 15,361 28.35 –5.54 1 –1 United Left of Castile and León (IU) 4,422 8.16 +5.48 0 ±0 Sorian Progressive Union (US) 417 0.77 New 0 ±0 Commoners' Land–Castilian Nationalist Party (TC–PNC) 264 0.49 +0.10 0 ±0 Party of El Bierzo (PB) 110 0.20 New 0 ±0 Blank ballots 1,529 2.82 +1.04 Total 54,192 5 ±0 Valid votes 54,192 98.83 –0.45 Invalid votes 643 1.17 +0.45 Votes cast / turnout 54,835 69.35 +3.97 Abstentions 24,235 30.65 –3.97 Registered voters 79,070 Sources

1991 + Summary of the 26 May 1991 Cortes of Castile and León election results in Soria Parties and alliances Popular vote Seats Votes % ±pp Total +/− People's Party (PP)1 26,977 52.27 +5.03 3 +1 Spanish Socialist Workers' Party (PSOE) 17,492 33.89 +1.55 2 ±0 Democratic and Social Centre (CDS) 3,302 6.40 –7.94 0 –1 United Left (IU) 1,385 2.68 ±0.00 0 ±0 Castilianist Union (UC) 528 1.02 New 0 ±0 The Greens (LV) 511 0.99 New 0 ±0 Nationalist Party of Castile and León (PANCAL) 298 0.58 –0.14 0 ±0 Commoners' Land (TC) 201 0.39 New 0 ±0 Blank ballots 917 1.78 –0.21 Total 51,611 5 ±0 Valid votes 51,611 99.28 +2.10 Invalid votes 373 0.72 –2.10 Votes cast / turnout 51,984 65.38 –5.51 Abstentions 27,529 34.62 +5.51 Registered voters 79,513 Sources

1987 + Summary of the 10 June 1987 Cortes of Castile and León election results in Soria Parties and alliances Popular vote Seats Votes % ±pp Total +/− People's Alliance (AP)1 22,668 41.75 n/a 2 ±0 Spanish Socialist Workers' Party (PSOE) 17,562 32.34 –6.21 2 ±0 Democratic and Social Centre (CDS) 7,786 14.34 +6.62 1 +1 People's Democratic Party (PDP)1 2,981 5.49 n/a 0 ±0 United Left (IU)2 1,454 2.68 +0.70 0 ±0 Nationalist Party of Castile and León (PNCL–PANCAL)1 391 0.72 n/a 0 –1 Workers' Party of Spain–Communist Unity (PTE–UC) 265 0.49 New 0 ±0 Leonesist Union (UNLE) 116 0.21 New 0 ±0 Blank ballots 1,078 1.99 +0.80 Total 54,301 5 ±0 Valid votes 54,301 97.18 –0.72 Invalid votes 1,576 2.82 +0.72 Votes cast / turnout 55,877 70.89 +3.54 Abstentions 22,950 29.11 –3.54 Registered voters 78,827 Sources

1983