# Castellón (Congress of Deputies constituency)

Castellón (Valencian: Castelló) is one of the 52 constituencies (Spanish: circunscripciones) represented in the Congress of Deputies, the lower chamber of the Spanish parliament, the Cortes Generales. The constituency currently elects five deputies. Its boundaries correspond to those of the Spanish province of Castellón. The electoral system uses the D'Hondt method and a closed-list proportional representation, with a minimum threshold of three percent.

## Electoral system

The constituency was created as per the Political Reform Act 1977 and was first contested in the 1977 general election. The Act 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 on the basis of universal suffrage, which comprises all nationals over 18 years of age and in full enjoyment of their political rights. 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 to the electoral law in 2011 required for Spaniards abroad to apply for voting before being permitted to vote, a system known as "begged" or expat vote (Spanish: Voto rogado), which was abolished in 2022. 348 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. Each provincial constituency is entitled to an initial minimum of two seats, with the remaining 248 being distributed in proportion to their populations. Ceuta and Melilla are allocated the two remaining seats, which are elected using plurality voting. The use of the electoral method may result in an effective threshold based on the district magnitude and the distribution of votes among candidacies.
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 permille of the electorate, with a compulsory minimum of 500 signatures, until 1985—disallowing electors from signing for more than one list of candidates. Also since 2011, parties, federations or coalitions that have not obtained a mandate in either chamber of the Cortes at the preceding election are required to secure the signature of at least 0.1 percent of electors in the aforementioned constituencies.

## Deputies

Deputies 1977–present :
| Key to parties  U.Podemos  ALV  EEM  PSOE  Cs  CIC  UCD  PP  CP  AP  Vox |||
| Legislature | Election | Distribution |
| Constituent | 1977 | 2 1 2 |
| 1st | 1979 | 2 3 |
| 2nd | 1982 | 3 2 |
| 3rd | 1986 | 3 2 |
| 4th | 1989 | 3 2 |
| 5th | 1993 | 2 3 |
| 6th | 1996 | 2 3 |
| 7th | 2000 | 2 3 |
| 8th | 2004 | 2 3 |
| 9th | 2008 | 2 3 |
| 10th | 2011 | 2 3 |
| 11th | 2015 | 1 1 1 2 |
| 12th | 2016 | 1 1 1 2 |
| 13th | 2019 (Apr) | 1 2 1 1 |
| 14th | 2019 (Nov) | 1 2 1 1 |
| 15th | 2023 | 2 2 1 |

## Elections
### 2023 general election

Summary of the 23 July 2023 Congress of Deputies election results in Castellón :
| Parties and alliances | Parties and alliances | Popular vote | Popular vote | Popular vote | Seats | Seats |
| Parties and alliances | Parties and alliances | Votes | % | ±pp | Total | +/− |
| | People's Party (PP) | 108,302 | 35.17 | +11.34 | 2 | +1 |
| | Spanish Socialist Workers' Party (PSOE) | 100,530 | 32.65 | +4.10 | 2 | ±0 |
| | Vox (Vox) | 48,913 | 15.88 | –2.75 | 1 | ±0 |
| | Commitment–Unite: We Unite to Win (Sumar–Compromís)$^1$ | 44,187 | 14.35 | –5.14 | 0 | –1 |
| | Animalist Party with the Environment (PACMA)$^2$ | 1,968 | 0.64 | –0.20 | 0 | ±0 |
| | Workers' Front (FO) | 721 | 0.23 | New | 0 | ±0 |
| | Zero Cuts (Recortes Cero) | 493 | 0.16 | +0.07 | 0 | ±0 |
| | Spanish Phalanx of the CNSO (FE–JONS) | 161 | 0.05 | ±0.00 | 0 | ±0 |
| Blank ballots | Blank ballots | 2,655 | 0.86 | +0.10 | | |
| Total | Total | 307,930 | | | 5 | ±0 |
| Valid votes | Valid votes | 307,930 | 98.83 | –0.15 | | |
| Invalid votes | Invalid votes | 3,651 | 1.17 | +0.15 | | |
| Votes cast / turnout | Votes cast / turnout | 311,581 | 72.32 | +1.61 | | |
| Abstentions | Abstentions | 119,249 | 27.68 | –1.61 | | |
| Registered voters | Registered voters | 430,830 | | | | |
| Sources |||||||
| Footnotes: $^1$ Commitment–Unite: We Unite to Win results are compared to the combined totals of United We Can and More Commitment in the November 2019 election.$^2$ Animalist Party with the Environment results are compared to Animalist Party Against Mistreatment of Animals totals in the November 2019 election. |||||||

### November 2019 general election

Summary of the 10 November 2019 Congress of Deputies election results in Castellón :
| Parties and alliances | Parties and alliances | Popular vote | Popular vote | Popular vote | Seats | Seats |
| Parties and alliances | Parties and alliances | Votes | % | ±pp | Total | +/− |
| | Spanish Socialist Workers' Party (PSOE) | 84,078 | 28.55 | –0.93 | 2 | ±0 |
| | People's Party (PP) | 70,176 | 23.83 | +3.49 | 1 | ±0 |
| | Vox (Vox) | 54,849 | 18.63 | +6.65 | 1 | +1 |
| | United We Can (Podemos–EUPV) | 39,251 | 13.33 | –0.60 | 1 | ±0 |
| | Citizens–Party of the Citizenry (Cs) | 20,302 | 6.89 | –9.39 | 0 | –1 |
| | More Commitment (Més Compromís)$^1$ | 18,140 | 6.16 | +0.83 | 0 | ±0 |
| | Animalist Party Against Mistreatment of Animals (PACMA) | 2,483 | 0.84 | –0.24 | 0 | ±0 |
| | Republican Left of the Valencian Country (ERPV) | 1,106 | 0.38 | +0.11 | 0 | ±0 |
| | Forward–The Greens (Avant/Adelante–LV) | 405 | 0.14 | –0.05 | 0 | ±0 |
| | Spanish Communist Workers' Party (PCOE) | 379 | 0.13 | New | 0 | ±0 |
| | For a Fairer World (PUM+J) | 370 | 0.13 | +0.03 | 0 | ±0 |
| | Zero Cuts–Green Group (Recortes Cero–GV) | 257 | 0.09 | –0.02 | 0 | ±0 |
| | Communist Party of the Peoples of Spain (PCPE) | 194 | 0.07 | –0.03 | 0 | ±0 |
| | Spanish Phalanx of the CNSO (FE–JONS) | 137 | 0.05 | –0.02 | 0 | ±0 |
| | At Once Valencian Community (aUna CV) | 104 | 0.04 | New | 0 | ±0 |
| Blank ballots | Blank ballots | 2,238 | 0.76 | +0.03 | | |
| Total | Total | 294,469 | | | 5 | ±0 |
| Valid votes | Valid votes | 294,469 | 98.98 | +0.21 | | |
| Invalid votes | Invalid votes | 3,023 | 1.02 | –0.21 | | |
| Votes cast / turnout | Votes cast / turnout | 297,492 | 70.71 | –4.89 | | |
| Abstentions | Abstentions | 123,249 | 29.29 | +4.89 | | |
| Registered voters | Registered voters | 420,741 | | | | |
| Sources |||||||
| Footnotes: $^1$ More Commitment results are compared to Commitment: Bloc–Initiative–Greens Equo totals in the April 2019 election. |||||||

### April 2019 general election

Summary of the 28 April 2019 Congress of Deputies election results in Castellón :
| Parties and alliances | Parties and alliances | Popular vote | Popular vote | Popular vote | Seats | Seats |
| Parties and alliances | Parties and alliances | Votes | % | ±pp | Total | +/− |
| | Spanish Socialist Workers' Party (PSOE) | 92,379 | 29.48 | +7.40 | 2 | +1 |
| | People's Party (PP) | 63,756 | 20.34 | –15.34 | 1 | –1 |
| | Citizens–Party of the Citizenry (Cs) | 51,017 | 16.28 | +1.53 | 1 | ±0 |
| | United We Can (Podemos–EUPV)$^1$ | 43,656 | 13.93 | –10.23 | 1 | ±0 |
| | Vox (Vox) | 37,551 | 11.98 | +11.74 | 0 | ±0 |
| | Commitment: Bloc–Initiative–Greens Equo (Compromís 2019) | 16,713 | 5.33 | New | 0 | ±0 |
| | Animalist Party Against Mistreatment of Animals (PACMA) | 3,381 | 1.08 | +0.08 | 0 | ±0 |
| | Republican Left of the Valencian Country (ERPV) | 859 | 0.27 | New | 0 | ±0 |
| | Forward–The Greens (Avant/Adelante–LV) | 586 | 0.19 | New | 0 | ±0 |
| | Zero Cuts–Green Group (Recortes Cero–GV) | 341 | 0.11 | –0.08 | 0 | ±0 |
| | Communist Party of the Peoples of Spain (PCPE) | 329 | 0.10 | –0.03 | 0 | ±0 |
| | For a Fairer World (PUM+J) | 302 | 0.10 | New | 0 | ±0 |
| | Spanish Phalanx of the CNSO (FE–JONS) | 222 | 0.07 | –0.09 | 0 | ±0 |
| Blank ballots | Blank ballots | 2,301 | 0.73 | +0.04 | | |
| Total | Total | 313,393 | | | 5 | ±0 |
| Valid votes | Valid votes | 313,393 | 98.77 | –0.20 | | |
| Invalid votes | Invalid votes | 3,909 | 1.23 | +0.20 | | |
| Votes cast / turnout | Votes cast / turnout | 317,302 | 75.60 | +3.01 | | |
| Abstentions | Abstentions | 102,412 | 24.40 | –3.01 | | |
| Registered voters | Registered voters | 419,714 | | | | |
| Sources |||||||
| Footnotes: $^1$ United We Can results are compared to The Valencian Way totals in the 2016 election. |||||||

### 2016 general election

Summary of the 26 June 2016 Congress of Deputies election results in Castellón :
| Parties and alliances | Parties and alliances | Popular vote | Popular vote | Popular vote | Seats | Seats |
| Parties and alliances | Parties and alliances | Votes | % | ±pp | Total | +/− |
| | People's Party (PP) | 106,746 | 35.68 | +3.86 | 2 | ±0 |
| | The Valencian Way (Podemos–Compromís–EUPV)$^1$ | 72,281 | 24.16 | –3.09 | 1 | ±0 |
| | Spanish Socialist Workers' Party (PSOE) | 66,062 | 22.08 | +0.56 | 1 | ±0 |
| | Citizens–Party of the Citizenry (C's) | 44,121 | 14.75 | –0.87 | 1 | ±0 |
| | Animalist Party Against Mistreatment of Animals (PACMA) | 2,985 | 1.00 | +0.27 | 0 | ±0 |
| | Citizens of Democratic Centre (CCD) | 1,712 | 0.57 | –0.12 | 0 | ±0 |
| | Vox (Vox) | 711 | 0.24 | –0.06 | 0 | ±0 |
| | Union, Progress and Democracy (UPyD) | 662 | 0.22 | –0.34 | 0 | ±0 |
| | Zero Cuts–Green Group (Recortes Cero–GV) | 561 | 0.19 | +0.03 | 0 | ±0 |
| | Spanish Phalanx of the CNSO (FE–JONS) | 476 | 0.16 | New | 0 | ±0 |
| | We Are Valencian (SOMVAL) | 415 | 0.14 | –0.01 | 0 | ±0 |
| | Communist Party of the Peoples of Spain (PCPE) | 403 | 0.13 | –0.03 | 0 | ±0 |
| Blank ballots | Blank ballots | 2,069 | 0.69 | +0.01 | | |
| Total | Total | 299,204 | | | 5 | ±0 |
| Valid votes | Valid votes | 299,204 | 98.97 | +0.03 | | |
| Invalid votes | Invalid votes | 3,120 | 1.03 | –0.03 | | |
| Votes cast / turnout | Votes cast / turnout | 302,324 | 72.59 | –2.39 | | |
| Abstentions | Abstentions | 114,167 | 27.41 | +2.39 | | |
| Registered voters | Registered voters | 416,491 | | | | |
| Sources |||||||
| Footnotes: $^1$ The Valencian Way results are compared to the combined totals of It is Time and United Left of the Valencian Country–Popular Unity in Common in the 2015 election. |||||||

### 2015 general election

Summary of the 20 December 2015 Congress of Deputies election results in Castellón :
| Parties and alliances | Parties and alliances | Popular vote | Popular vote | Popular vote | Seats | Seats |
| Parties and alliances | Parties and alliances | Votes | % | ±pp | Total | +/− |
| | People's Party (PP) | 98,474 | 31.82 | –21.02 | 2 | –1 |
| | It is Time (Podemos–Compromís)$^1$ | 74,732 | 24.15 | +20.14 | 1 | +1 |
| | Spanish Socialist Workers' Party (PSOE) | 66,590 | 21.52 | –8.04 | 1 | –1 |
| | Citizens–Party of the Citizenry (C's) | 48,328 | 15.62 | New | 1 | +1 |
| | United Left of the Valencian Country–Popular Unity in Common (EUPV–UPeC) | 9,605 | 3.10 | –2.19 | 0 | ±0 |
| | Animalist Party Against Mistreatment of Animals (PACMA) | 2,252 | 0.73 | +0.32 | 0 | ±0 |
| | Citizens of Democratic Centre (CCD) | 2,137 | 0.69 | New | 0 | ±0 |
| | Union, Progress and Democracy (UPyD) | 1,743 | 0.56 | –3.49 | 0 | ±0 |
| | Vox (Vox) | 921 | 0.30 | New | 0 | ±0 |
| | Communist Party of the Peoples of Spain (PCPE) | 509 | 0.16 | –0.03 | 0 | ±0 |
| | Zero Cuts–Green Group (Recortes Cero–GV) | 489 | 0.16 | New | 0 | ±0 |
| | National Democracy (DN) | 471 | 0.15 | New | 0 | ±0 |
| | We Are Valencian (SOMVAL) | 467 | 0.15 | New | 0 | ±0 |
| | Valencian Country Now (Ara PV)$^2$ | 413 | 0.13 | –0.38 | 0 | ±0 |
| | Feminist Initiative (IFem) | 261 | 0.08 | New | 0 | ±0 |
| Blank ballots | Blank ballots | 2,093 | 0.68 | –0.72 | | |
| Total | Total | 309,485 | | | 5 | ±0 |
| Valid votes | Valid votes | 309,485 | 98.94 | +0.61 | | |
| Invalid votes | Invalid votes | 3,330 | 1.06 | –0.61 | | |
| Votes cast / turnout | Votes cast / turnout | 312,815 | 74.98 | +2.24 | | |
| Abstentions | Abstentions | 104,382 | 25.02 | –2.24 | | |
| Registered voters | Registered voters | 417,197 | | | | |
| Sources |||||||
| Footnotes: $^1$ It is Time results are compared to Commitment Coalition–Equo totals in the 2011 election.$^2$ Valencian Country Now results are compared to Republican Left of the Valencian Country totals in the 2011 election. |||||||

### 2011 general election

Summary of the 20 November 2011 Congress of Deputies election results in Castellón :
| Parties and alliances | Parties and alliances | Popular vote | Popular vote | Popular vote | Seats | Seats |
| Parties and alliances | Parties and alliances | Votes | % | ±pp | Total | +/− |
| | People's Party (PP) | 156,683 | 52.84 | +3.86 | 3 | ±0 |
| | Spanish Socialist Workers' Party (PSOE) | 87,657 | 29.56 | –14.62 | 2 | ±0 |
| | United Left of the Valencian Country–The Greens: Plural Left (EUPV–EV) | 15,692 | 5.29 | +3.20 | 0 | ±0 |
| | Union, Progress and Democracy (UPyD) | 12,008 | 4.05 | +3.49 | 0 | ±0 |
| | Bloc–Initiative–Greens–Equo: Commitment Coalition (Compromís–Q)$^1$ | 11,890 | 4.01 | +3.00 | 0 | ±0 |
| | Spain 2000 (E–2000) | 3,687 | 1.24 | +0.91 | 0 | ±0 |
| | Republican Left of the Valencian Country (ERPV) | 1,501 | 0.51 | +0.17 | 0 | ±0 |
| | Animalist Party Against Mistreatment of Animals (PACMA) | 1,223 | 0.41 | +0.24 | 0 | ±0 |
| | Pirate Party (Pirata) | 1,001 | 0.34 | New | 0 | ±0 |
| | Communist Party of the Peoples of Spain (PCPE) | 563 | 0.19 | +0.13 | 0 | ±0 |
| | Internationalist Socialist Workers' Party (POSI) | 284 | 0.10 | +0.07 | 0 | ±0 |
| | Communist Unification of Spain (UCE) | 180 | 0.06 | New | 0 | ±0 |
| Blank ballots | Blank ballots | 4,146 | 1.40 | +0.32 | | |
| Total | Total | 296,515 | | | 5 | ±0 |
| Valid votes | Valid votes | 296,515 | 98.33 | –0.93 | | |
| Invalid votes | Invalid votes | 5,033 | 1.67 | +0.93 | | |
| Votes cast / turnout | Votes cast / turnout | 301,548 | 72.74 | –5.09 | | |
| Abstentions | Abstentions | 113,013 | 27.26 | +5.09 | | |
| Registered voters | Registered voters | 414,561 | | | | |
| Sources |||||||
| Footnotes: $^1$ Bloc–Initiative–Greens–Equo: Commitment Coalition results are compared to Bloc–Initiative–Greens totals in the 2008 election. |||||||

### 2008 general election

Summary of the 9 March 2008 Congress of Deputies election results in Castellón :
| Parties and alliances | Parties and alliances | Popular vote | Popular vote | Popular vote | Seats | Seats |
| Parties and alliances | Parties and alliances | Votes | % | ±pp | Total | +/− |
| | People's Party (PP) | 155,549 | 48.98 | +3.34 | 3 | ±0 |
| | Spanish Socialist Workers' Party (PSOE) | 140,304 | 44.18 | –0.42 | 2 | ±0 |
| | United and Republican Left (EUPV–IR) | 6,635 | 2.09 | –1.22 | 0 | ±0 |
| | Bloc–Initiative–Greens (Bloc–IdPV–EVEE) | 3,223 | 1.01 | –1.02 | 0 | ±0 |
| | Union, Progress and Democracy (UPyD) | 1,790 | 0.56 | New | 0 | ±0 |
| | Republican Left of the Valencian Country (esquerra–PV) | 1,082 | 0.34 | –0.37 | 0 | ±0 |
| | Spain 2000 (E–2000) | 1,054 | 0.33 | +0.11 | 0 | ±0 |
| | The Greens (EV–LV)$^1$ | 750 | 0.24 | –0.45 | 0 | ±0 |
| | The Greens–Green Group (LV–GV) | 553 | 0.17 | New | 0 | ±0 |
| | Anti-Bullfighting Party Against Mistreatment of Animals (PACMA) | 544 | 0.17 | New | 0 | ±0 |
| | Social Democratic Party (PSD) | 426 | 0.13 | New | 0 | ±0 |
| | Citizens–Party of the Citizenry (C's) | 294 | 0.09 | New | 0 | ±0 |
| | For a Fairer World (PUM+J) | 229 | 0.07 | New | 0 | ±0 |
| | Valencian Coalition (CVa) | 213 | 0.07 | New | 0 | ±0 |
| | National Democracy (DN) | 209 | 0.07 | ±0.00 | 0 | ±0 |
| | Communist Party of the Peoples of Spain (PCPE) | 203 | 0.06 | –0.02 | 0 | ±0 |
| | Spanish Phalanx of the CNSO (FE–JONS) | 196 | 0.06 | –0.01 | 0 | ±0 |
| | Valencian Nationalist Option (ONV) | 183 | 0.06 | New | 0 | ±0 |
| | Family and Life Party (PFyV) | 124 | 0.04 | –0.08 | 0 | ±0 |
| | Internationalist Socialist Workers' Party (POSI) | 93 | 0.03 | –0.06 | 0 | ±0 |
| | Humanist Party (PH) | 78 | 0.02 | –0.07 | 0 | ±0 |
| | For the Valencian Republic (plRV) | 76 | 0.02 | New | 0 | ±0 |
| | Authentic Phalanx (FA) | 72 | 0.02 | –0.04 | 0 | ±0 |
| | Spanish Alternative (AES) | 72 | 0.02 | New | 0 | ±0 |
| | Carlist Traditionalist Communion (CTC) | 70 | 0.02 | New | 0 | ±0 |
| | Kingdom of Valencia Identity (IRV) | 62 | 0.02 | New | 0 | ±0 |
| | National Alliance (AN) | 60 | 0.02 | New | 0 | ±0 |
| | Centrist Party (PCTR) | 36 | 0.01 | New | 0 | ±0 |
| Blank ballots | Blank ballots | 3,416 | 1.08 | –0.53 | | |
| Total | Total | 317,596 | | | 5 | ±0 |
| Valid votes | Valid votes | 317,596 | 99.26 | +0.12 | | |
| Invalid votes | Invalid votes | 2,362 | 0.74 | –0.12 | | |
| Votes cast / turnout | Votes cast / turnout | 319,958 | 77.83 | –0.58 | | |
| Abstentions | Abstentions | 91,123 | 22.17 | +0.58 | | |
| Registered voters | Registered voters | 411,081 | | | | |
| Sources |||||||
| Footnotes: $^1$ The Greens results are compared to The Eco-pacifist Greens totals in the 2004 election. |||||||

### 2004 general election

Summary of the 14 March 2004 Congress of Deputies election results in Castellón :
| Parties and alliances | Parties and alliances | Popular vote | Popular vote | Popular vote | Seats | Seats |
| Parties and alliances | Parties and alliances | Votes | % | ±pp | Total | +/− |
| | People's Party (PP) | 142,462 | 45.64 | –8.15 | 3 | ±0 |
| | Spanish Socialist Workers' Party (PSOE) | 139,236 | 44.60 | +9.25 | 2 | ±0 |
| | United Left–The Agreement+Republican Left (Entesa+IR) | 10,322 | 3.31 | –0.49 | 0 | ±0 |
| | Valencian Nationalist Bloc–Green Left (Bloc–EV) | 6,325 | 2.03 | –0.33 | 0 | ±0 |
| | Republican Left of the Valencian Country (ERPV) | 2,210 | 0.71 | +0.48 | 0 | ±0 |
| | The Eco-pacifist Greens (LVEP) | 2,153 | 0.69 | –0.05 | 0 | ±0 |
| | Citizens for Blank Votes (CenB) | 881 | 0.28 | New | 0 | ±0 |
| | Democratic and Social Centre (CDS) | 752 | 0.24 | +0.15 | 0 | ±0 |
| | Spain 2000 (E–2000) | 694 | 0.22 | +0.18 | 0 | ±0 |
| | Family and Life Party (PFyV) | 390 | 0.12 | New | 0 | ±0 |
| | Humanist Party (PH) | 282 | 0.09 | +0.03 | 0 | ±0 |
| | Internationalist Socialist Workers' Party (POSI) | 266 | 0.09 | –0.07 | 0 | ±0 |
| | Communist Party of the Peoples of Spain (PCPE) | 255 | 0.08 | –0.01 | 0 | ±0 |
| | Spanish Phalanx of the CNSO (FE–JONS) | 211 | 0.07 | New | 0 | ±0 |
| | National Democracy (DN) | 205 | 0.07 | New | 0 | ±0 |
| | Authentic Phalanx (FA) | 172 | 0.06 | New | 0 | ±0 |
| | Republican Party (PRF) | 152 | 0.05 | New | 0 | ±0 |
| | The Phalanx (FE) | 121 | 0.04 | –0.05 | 0 | ±0 |
| | Republican Social Movement (MSR) | 60 | 0.02 | New | 0 | ±0 |
| Blank ballots | Blank ballots | 5,025 | 1.61 | +0.29 | | |
| Total | Total | 312,174 | | | 5 | ±0 |
| Valid votes | Valid votes | 312,174 | 99.14 | –0.02 | | |
| Invalid votes | Invalid votes | 2,703 | 0.86 | +0.02 | | |
| Votes cast / turnout | Votes cast / turnout | 314,877 | 78.41 | +4.71 | | |
| Abstentions | Abstentions | 86,682 | 21.59 | –4.71 | | |
| Registered voters | Registered voters | 401,559 | | | | |
| Sources |||||||

### 2000 general election

Summary of the 12 March 2000 Congress of Deputies election results in Castellón :
| Parties and alliances | Parties and alliances | Popular vote | Popular vote | Popular vote | Seats | Seats |
| Parties and alliances | Parties and alliances | Votes | % | ±pp | Total | +/− |
| | People's Party (PP) | 152,462 | 53.79 | +7.32 | 3 | ±0 |
| | Spanish Socialist Workers' Party–Progressives (PSOE–p) | 100,177 | 35.35 | –4.64 | 2 | ±0 |
| | United Left of the Valencian Country (EUPV) | 10,773 | 3.80 | –3.80 | 0 | ±0 |
| | Valencian Nationalist Bloc–The Greens–Valencians for Change (BNV–EV)$^1$ | 6,678 | 2.36 | +0.12 | 0 | ±0 |
| | Valencian Union (UV) | 3,511 | 1.24 | –0.72 | 0 | ±0 |
| | The Eco-pacifist Greens (LVEP) | 2,111 | 0.74 | New | 0 | ±0 |
| | Internationalist Socialist Workers' Party (POSI) | 997 | 0.35 | New | 0 | ±0 |
| | Liberal Independent Group (GIL) | 668 | 0.24 | New | 0 | ±0 |
| | Front for the Valencian Country–Republican Left of Catalonia (Front–ERC) | 662 | 0.23 | –0.05 | 0 | ±0 |
| | Communist Party of the Peoples of Spain (PCPE) | 263 | 0.09 | –0.13 | 0 | ±0 |
| | Centrist Union–Democratic and Social Centre (UC–CDS) | 258 | 0.09 | –0.09 | 0 | ±0 |
| | The Phalanx (FE) | 242 | 0.09 | New | 0 | ±0 |
| | Humanist Party (PH) | 171 | 0.06 | +0.01 | 0 | ±0 |
| | Carlist Party (PC) | 159 | 0.06 | New | 0 | ±0 |
| | Natural Law Party (PLN) | 131 | 0.05 | New | 0 | ±0 |
| | Spain 2000 Platform (ES2000) | 118 | 0.04 | New | 0 | ±0 |
| | Valencian Nationalist Left (ENV) | 118 | 0.04 | –0.01 | 0 | ±0 |
| | Catalan State (EC) | 113 | 0.04 | New | 0 | ±0 |
| | Spanish Democratic Party (PADE) | 62 | 0.02 | New | 0 | ±0 |
| | Republican Action (AR) | 0 | 0.00 | New | 0 | ±0 |
| Blank ballots | Blank ballots | 3,751 | 1.32 | +0.47 | | |
| Total | Total | 283,425 | | | 5 | ±0 |
| Valid votes | Valid votes | 283,425 | 99.16 | –0.22 | | |
| Invalid votes | Invalid votes | 2,391 | 0.84 | +0.22 | | |
| Votes cast / turnout | Votes cast / turnout | 285,816 | 73.70 | –7.86 | | |
| Abstentions | Abstentions | 102,007 | 26.30 | +7.86 | | |
| Registered voters | Registered voters | 387,823 | | | | |
| Sources |||||||
| Footnotes: $^1$ Valencian Nationalist Bloc–The Greens–Valencians for Change results are compared to the combined totals of Valencian People's Union–Nationalist Bloc and The Greens of the Valencian Country in the 1996 election. |||||||

### 1996 general election

Summary of the 3 March 1996 Congress of Deputies election results in Castellón :
| Parties and alliances | Parties and alliances | Popular vote | Popular vote | Popular vote | Seats | Seats |
| Parties and alliances | Parties and alliances | Votes | % | ±pp | Total | +/− |
| | People's Party (PP) | 140,578 | 46.47 | +1.60 | 3 | ±0 |
| | Spanish Socialist Workers' Party (PSOE) | 120,997 | 39.99 | +0.40 | 2 | ±0 |
| | United Left of the Valencian Country (EUPV) | 23,003 | 7.60 | +0.55 | 0 | ±0 |
| | Valencian Union (UV) | 5,933 | 1.96 | +0.21 | 0 | ±0 |
| | Valencian People's Union–Nationalist Bloc (UPV–BN) | 4,341 | 1.43 | –0.71 | 0 | ±0 |
| | The Greens of the Valencian Country (EV) | 2,446 | 0.81 | +0.01 | 0 | ±0 |
| | Republican Left of Catalonia (ERC) | 840 | 0.28 | New | 0 | ±0 |
| | Communist Party of the Peoples of Spain (PCPE) | 666 | 0.22 | New | 0 | ±0 |
| | Centrist Union (UC) | 544 | 0.18 | –1.86 | 0 | ±0 |
| | Workers' Revolutionary Party (PRT) | 174 | 0.06 | New | 0 | ±0 |
| | Authentic Spanish Phalanx (FEA) | 163 | 0.05 | New | 0 | ±0 |
| | Valencian Nationalist Left (ENV) | 157 | 0.05 | –0.01 | 0 | ±0 |
| | Humanist Party (PH) | 144 | 0.05 | +0.02 | 0 | ±0 |
| Blank ballots | Blank ballots | 2,559 | 0.85 | +0.20 | | |
| Total | Total | 302,545 | | | 5 | ±0 |
| Valid votes | Valid votes | 302,545 | 99.38 | +0.16 | | |
| Invalid votes | Invalid votes | 1,885 | 0.62 | –0.16 | | |
| Votes cast / turnout | Votes cast / turnout | 304,430 | 81.56 | +0.44 | | |
| Abstentions | Abstentions | 68,809 | 18.44 | –0.44 | | |
| Registered voters | Registered voters | 373,239 | | | | |
| Sources |||||||

### 1993 general election

Summary of the 6 June 1993 Congress of Deputies election results in Castellón :
| Parties and alliances | Parties and alliances | Popular vote | Popular vote | Popular vote | Seats | Seats |
| Parties and alliances | Parties and alliances | Votes | % | ±pp | Total | +/− |
| | People's Party (PP) | 128,916 | 44.87 | +10.99 | 3 | +1 |
| | Spanish Socialist Workers' Party (PSOE) | 113,752 | 39.59 | –2.09 | 2 | –1 |
| | United Left of the Valencian Country (EU–PV) | 20,250 | 7.05 | +1.56 | 0 | ±0 |
| | Valencian People's Union (UPV) | 6,135 | 2.14 | –0.32 | 0 | ±0 |
| | Democratic and Social Centre (CDS) | 5,867 | 2.04 | –6.76 | 0 | ±0 |
| | Valencian Union (UV) | 5,014 | 1.75 | +0.47 | 0 | ±0 |
| | The Greens (LV)$^1$ | 2,294 | 0.80 | –0.67 | 0 | ±0 |
| | The Ecologists (LE) | 1,096 | 0.38 | –0.36 | 0 | ±0 |
| | Ruiz-Mateos Group–European Democratic Alliance (ARM–ADE) | 564 | 0.20 | –0.99 | 0 | ±0 |
| | Spanish Democratic Republican Action (ARDE) | 501 | 0.17 | New | 0 | ±0 |
| | Revolutionary Workers' Party (POR) | 209 | 0.07 | New | 0 | ±0 |
| | Valencian Nationalist Left (ENV) | 164 | 0.06 | –0.05 | 0 | ±0 |
| | Spanish Phalanx of the CNSO (FE–JONS) | 163 | 0.06 | –0.07 | 0 | ±0 |
| | Cantonal Party of Castellón (PCAN) | 158 | 0.05 | New | 0 | ±0 |
| | Natural Law Party (PLN) | 140 | 0.05 | New | 0 | ±0 |
| | Coalition for a New Socialist Party (CNPS)$^2$ | 119 | 0.04 | –0.15 | 0 | ±0 |
| | Humanist Party (PH) | 99 | 0.03 | –0.04 | 0 | ±0 |
| | Communist Unification of Spain (UCE) | 0 | 0.00 | New | 0 | ±0 |
| Blank ballots | Blank ballots | 1,881 | 0.65 | –0.01 | | |
| Total | Total | 287,322 | | | 5 | ±0 |
| Valid votes | Valid votes | 287,322 | 99.22 | +0.14 | | |
| Invalid votes | Invalid votes | 2,267 | 0.78 | –0.14 | | |
| Votes cast / turnout | Votes cast / turnout | 289,589 | 81.12 | +5.80 | | |
| Abstentions | Abstentions | 67,405 | 18.88 | –5.80 | | |
| Registered voters | Registered voters | 356,994 | | | | |
| Sources |||||||
| Footnotes: $^1$ The Greens results are compared to The Greens–Green List totals in the 1989 election.$^2$ Coalition for a New Socialist Party results are compared to Alliance for the Republic totals in the 1989 election. |||||||

### 1989 general election

Summary of the 29 October 1989 Congress of Deputies election results in Castellón :
| Parties and alliances | Parties and alliances | Popular vote | Popular vote | Popular vote | Seats | Seats |
| Parties and alliances | Parties and alliances | Votes | % | ±pp | Total | +/− |
| | Spanish Socialist Workers' Party (PSOE) | 106,223 | 41.68 | –4.57 | 3 | ±0 |
| | People's Party (PP)$^1$ | 86,359 | 33.88 | +0.52 | 2 | ±0 |
| | Democratic and Social Centre (CDS) | 22,428 | 8.80 | –0.16 | 0 | ±0 |
| | United Left–United Left of the Valencian Country (IU–EU) | 14,004 | 5.49 | +3.10 | 0 | ±0 |
| | Valencian People's Union (UPV) | 6,267 | 2.46 | +0.31 | 0 | ±0 |
| | The Greens–Green List (LV–LV) | 3,753 | 1.47 | +0.91 | 0 | ±0 |
| | Valencian Union (UV) | 3,254 | 1.28 | +0.76 | 0 | ±0 |
| | Ruiz-Mateos Group (Ruiz-Mateos) | 3,042 | 1.19 | New | 0 | ±0 |
| | Workers' Party of Spain–Communist Unity (PTE–UC)$^2$ | 1,999 | 0.78 | –0.76 | 0 | ±0 |
| | The Ecologist Greens (LVE) | 1,877 | 0.74 | New | 0 | ±0 |
| | Workers' Socialist Party (PST) | 1,238 | 0.49 | +0.05 | 0 | ±0 |
| | Social Democratic Coalition (CSD) | 979 | 0.38 | New | 0 | ±0 |
| | Communist Party of the Peoples of Spain (PCPE) | 525 | 0.21 | New | 0 | ±0 |
| | Alliance for the Republic (AxR)$^3$ | 476 | 0.19 | +0.05 | 0 | ±0 |
| | Spanish Phalanx of the CNSO (FE–JONS) | 319 | 0.13 | –0.07 | 0 | ±0 |
| | Valencian Nationalist Left–Valencian Regional Union (ENV–URV) | 278 | 0.11 | New | 0 | ±0 |
| | Humanist Party (PH) | 176 | 0.07 | New | 0 | ±0 |
| | Communist Party of Spain (Marxist–Leninist) (PCE (m–l))$^4$ | 0 | 0.00 | –0.22 | 0 | ±0 |
| Blank ballots | Blank ballots | 1,673 | 0.66 | +0.10 | | |
| Total | Total | 254,870 | | | 5 | ±0 |
| Valid votes | Valid votes | 254,870 | 99.08 | +1.20 | | |
| Invalid votes | Invalid votes | 2,366 | 0.92 | –1.20 | | |
| Votes cast / turnout | Votes cast / turnout | 257,236 | 75.32 | –2.51 | | |
| Abstentions | Abstentions | 84,268 | 24.68 | +2.51 | | |
| Registered voters | Registered voters | 341,504 | | | | |
| Sources |||||||
| Footnotes: $^1$ People's Party results are compared to People's Coalition totals in the 1986 election.$^2$ Workers' Party of Spain–Communist Unity results are compared to Communists' Unity Board totals in the 1986 election.$^3$ Alliance for the Republic results are compared to Internationalist Socialist Workers' Party totals in the 1986 election.$^4$ Communist Party of Spain (Marxist–Leninist) results are compared to Republican Popular Unity totals in the 1986 election. |||||||

### 1986 general election

Summary of the 22 June 1986 Congress of Deputies election results in Castellón :
| Parties and alliances | Parties and alliances | Popular vote | Popular vote | Popular vote | Seats | Seats |
| Parties and alliances | Parties and alliances | Votes | % | ±pp | Total | +/− |
| | Spanish Socialist Workers' Party (PSOE) | 119,250 | 46.25 | –3.37 | 3 | ±0 |
| | People's Coalition (AP–PDP–PL)$^1$ | 86,032 | 33.36 | +5.22 | 2 | ±0 |
| | Democratic and Social Centre (CDS) | 23,113 | 8.96 | +6.25 | 0 | ±0 |
| | Democratic Reformist Party (PRD) | 6,447 | 2.50 | New | 0 | ±0 |
| | United Left (IU)$^2$ | 6,155 | 2.39 | –0.77 | 0 | ±0 |
| | Valencian People's Union (UPV) | 5,556 | 2.15 | +1.54 | 0 | ±0 |
| | Communists' Unity Board (MUC) | 3,961 | 1.54 | New | 0 | ±0 |
| | The Greens (LV) | 1,448 | 0.56 | New | 0 | ±0 |
| | Valencian Union (UV) | 1,351 | 0.52 | New | 0 | ±0 |
| | Workers' Socialist Party (PST) | 1,124 | 0.44 | +0.09 | 0 | ±0 |
| | Republican Popular Unity (UPR)$^3$ | 573 | 0.22 | +0.12 | 0 | ±0 |
| | Communist Unification of Spain (UCE) | 528 | 0.20 | +0.11 | 0 | ±0 |
| | Spanish Phalanx of the CNSO (FE–JONS) | 509 | 0.20 | +0.20 | 0 | ±0 |
| | Internationalist Socialist Workers' Party (POSI) | 366 | 0.14 | New | 0 | ±0 |
| | Party of the Communists of Catalonia (PCC) | 0 | 0.00 | New | 0 | ±0 |
| Blank ballots | Blank ballots | 1,450 | 0.56 | +0.14 | | |
| Total | Total | 257,863 | | | 5 | ±0 |
| Valid votes | Valid votes | 257,863 | 97.88 | +0.74 | | |
| Invalid votes | Invalid votes | 5,593 | 2.12 | –0.74 | | |
| Votes cast / turnout | Votes cast / turnout | 263,456 | 77.83 | –8.11 | | |
| Abstentions | Abstentions | 75,040 | 22.17 | +8.11 | | |
| Registered voters | Registered voters | 338,496 | | | | |
| Sources |||||||
| Footnotes: $^1$ People's Coalition results are compared to People's Alliance–People's Democratic Party–Valencian Union totals in the 1982 election.$^2$ United Left results are compared to Communist Party of the Valencian Country totals in the 1982 election.$^3$ Republican Popular Unity results are compared to Communist Party of Spain (Marxist–Leninist) totals in the 1982 election. |||||||

### 1982 general election

Summary of the 28 October 1982 Congress of Deputies election results in Castellón :
| Parties and alliances | Parties and alliances | Popular vote | Popular vote | Popular vote | Seats | Seats |
| Parties and alliances | Parties and alliances | Votes | % | ±pp | Total | +/− |
| | Spanish Socialist Workers' Party (PSOE) | 130,200 | 49.62 | +13.94 | 3 | +1 |
| | People's Alliance–People's Democratic Party–Valencian Union (AP–PDP–UV)$^1$ | 73,826 | 28.14 | +24.65 | 2 | +2 |
| | Union of the Democratic Centre (UCD) | 33,547 | 12.79 | –33.55 | 0 | –3 |
| | Communist Party of the Valencian Country (PCE–PV) | 8,280 | 3.16 | –4.06 | 0 | ±0 |
| | Democratic and Social Centre (CDS) | 7,100 | 2.71 | New | 0 | ±0 |
| | New Force (FN)$^2$ | 2,777 | 1.06 | –1.03 | 0 | ±0 |
| | United Left of the Valencian Country (EUPV) | 1,967 | 0.75 | New | 0 | ±0 |
| | Valencian People's Union (UPV) | 1,589 | 0.61 | New | 0 | ±0 |
| | Workers' Socialist Party (PST) | 915 | 0.35 | New | 0 | ±0 |
| | Communist League–Internationalist Socialist Workers' Coalition (LC (COSI)) | 299 | 0.11 | New | 0 | ±0 |
| | Communist Party of Spain (Marxist–Leninist) (PCE (m–l)) | 252 | 0.10 | New | 0 | ±0 |
| | Communist Unification of Spain (UCE) | 240 | 0.09 | New | 0 | ±0 |
| | Independent Spanish Phalanx (FEI) | 177 | 0.07 | New | 0 | ±0 |
| | Falangist Movement of Spain (MFE) | 124 | 0.05 | New | 0 | ±0 |
| | Spanish Phalanx of the CNSO (FE–JONS) | 0 | 0.00 | New | 0 | ±0 |
| | Socialist Party (PS)$^3$ | 0 | 0.00 | –1.21 | 0 | ±0 |
| Blank ballots | Blank ballots | 1,089 | 0.42 | +0.09 | | |
| Total | Total | 262,382 | | | 5 | ±0 |
| Valid votes | Valid votes | 262,382 | 97.14 | –1.50 | | |
| Invalid votes | Invalid votes | 7,736 | 2.86 | +1.50 | | |
| Votes cast / turnout | Votes cast / turnout | 270,118 | 85.94 | +7.23 | | |
| Abstentions | Abstentions | 44,182 | 14.06 | –7.23 | | |
| Registered voters | Registered voters | 314,300 | | | | |
| Sources |||||||
| Footnotes: $^1$ People's Alliance–People's Democratic Party–Valencian Union results are compared to Democratic Coalition totals in the 1979 election.$^2$ New Force results are compared to National Union totals in the 1979 election.$^3$ Socialist Party results are compared to Spanish Socialist Workers' Party (historical) totals in the 1979 election. |||||||

### 1979 general election

Summary of the 1 March 1979 Congress of Deputies election results in Castellón :
| Parties and alliances | Parties and alliances | Popular vote | Popular vote | Popular vote | Seats | Seats |
| Parties and alliances | Parties and alliances | Votes | % | ±pp | Total | +/− |
| | Union of the Democratic Centre (UCD) | 111,359 | 46.34 | +11.02 | 3 | +1 |
| | Spanish Socialist Workers' Party (PSOE)$^1$ | 85,727 | 35.68 | +3.60 | 2 | ±0 |
| | Communist Party of Spain (PCE) | 17,361 | 7.22 | +1.33 | 0 | ±0 |
| | Democratic Coalition (CD)$^2$ | 8,382 | 3.49 | –2.64 | 0 | ±0 |
| | National Union (UN)$^3$ | 5,033 | 2.09 | +1.14 | 0 | ±0 |
| | Spanish Socialist Workers' Party (historical) (PSOEh)$^4$ | 2,913 | 1.21 | +0.12 | 0 | ±0 |
| | Carlist Party (PC) | 1,275 | 0.53 | New | 0 | ±0 |
| | Left Bloc for National Liberation (BEAN) | 1,060 | 0.44 | New | 0 | ±0 |
| | Party of Labour of Spain (PTE)$^5$ | 1,012 | 0.42 | –0.02 | 0 | ±0 |
| | Communist Organization of Spain (Red Flag) (OCE–BR) | 962 | 0.40 | New | 0 | ±0 |
| | Workers' Revolutionary Organization (ORT) | 957 | 0.40 | New | 0 | ±0 |
| | Communist Movement–Organization of Communist Left (MCPV–OIC) | 921 | 0.38 | New | 0 | ±0 |
| | Republican Left (IR) | 887 | 0.37 | New | 0 | ±0 |
| | Workers' Communist Party (PCT) | 480 | 0.20 | New | 0 | ±0 |
| | Spanish Phalanx of the CNSO (Authentic) (FE–JONS(A)) | 421 | 0.18 | New | 0 | ±0 |
| | Workers and Peasants Party (POC) | 417 | 0.17 | New | 0 | ±0 |
| | Revolutionary Communist League (LCR)$^6$ | 341 | 0.14 | –0.29 | 0 | ±0 |
| | Centre Independent Candidacy (CIC) | n/a | n/a | –12.53 | 0 | –1 |
| Blank ballots | Blank ballots | 791 | 0.33 | +0.02 | | |
| Total | Total | 240,299 | | | 5 | ±0 |
| Valid votes | Valid votes | 240,299 | 98.64 | +0.30 | | |
| Invalid votes | Invalid votes | 3,302 | 1.36 | –0.30 | | |
| Votes cast / turnout | Votes cast / turnout | 243,601 | 78.71 | –6.82 | | |
| Abstentions | Abstentions | 65,893 | 21.29 | +6.82 | | |
| Registered voters | Registered voters | 309,494 | | | | |
| Sources |||||||
| Footnotes: $^1$ Spanish Socialist Workers' Party results are compared to the combined totals of Spanish Socialist Workers' Party and People's Socialist Party–Socialist Unity in the 1977 election.$^2$ Democratic Coalition results are compared to People's Alliance totals in the 1977 election.$^3$ National Union results are compared to the combined totals of Spanish Phalanx of the CNSO and New Force in the 1977 election.$^4$ Spanish Socialist Workers' Party (historical) results are compared to Democratic Socialist Alliance totals in the 1977 election.$^5$ Party of Labour of Spain results are compared to Democratic Left Front totals in the 1977 election.$^6$ Revolutionary Communist League results are compared to Front for Workers' Unity totals in the 1977 election. |||||||

### 1977 general election

Summary of the 15 June 1977 Congress of Deputies election results in Castellón :
| Parties and alliances | Parties and alliances | Popular vote | Popular vote | Popular vote | Seats | Seats |
| Parties and alliances | Parties and alliances | Votes | % | ±pp | Total | +/− |
| | Union of the Democratic Centre (UCD) | 84,115 | 35.32 | n/a | 2 | n/a |
| | Spanish Socialist Workers' Party (PSOE) | 69,976 | 29.38 | n/a | 2 | n/a |
| | Centre Independent Candidacy (CIC) | 29,834 | 12.53 | n/a | 1 | n/a |
| | People's Alliance (AP) | 14,596 | 6.13 | n/a | 0 | n/a |
| | Communist Party of Spain (PCE) | 14,029 | 5.89 | n/a | 0 | n/a |
| | People's Socialist Party–Socialist Unity (PSP–US) | 6,430 | 2.70 | n/a | 0 | n/a |
| | Christian Democratic Team of the Spanish State (FDC–UDPV) | 5,515 | 2.32 | n/a | 0 | n/a |
| | Socialist Party of the Valencian Country (PSPV) | 3,727 | 1.56 | n/a | 0 | n/a |
| | Democratic Socialist Alliance (ASDCI) | 2,600 | 1.09 | n/a | 0 | n/a |
| | Carlist Electors of the Valencian Country (ECPV) | 2,252 | 0.95 | n/a | 0 | n/a |
| | Spanish Phalanx of the CNSO (FE–JONS) | 1,389 | 0.58 | n/a | 0 | n/a |
| | Democratic Left Front (FDI) | 1,040 | 0.44 | n/a | 0 | n/a |
| | Front for Workers' Unity (FUT) | 1,024 | 0.43 | n/a | 0 | n/a |
| | New Force (FN) | 877 | 0.37 | n/a | 0 | n/a |
| Blank ballots | Blank ballots | 750 | 0.31 | n/a | | |
| Total | Total | 238,154 | | | 5 | n/a |
| Valid votes | Valid votes | 238,154 | 98.34 | n/a | | |
| Invalid votes | Invalid votes | 4,032 | 1.66 | n/a | | |
| Votes cast / turnout | Votes cast / turnout | 242,186 | 85.53 | n/a | | |
| Abstentions | Abstentions | 40,975 | 14.47 | n/a | | |
| Registered voters | Registered voters | 283,161 | | | | |
| Sources |||||||