Castelo Branco is one of the 22 multi-member constituencies of the Assembly of the Republic, the national legislature of Portugal. The constituency was established in 1976 when the Assembly of the Republic was established by the constitution following the restoration of democracy. It is conterminous with the district of Castelo Branco. The constituency currently elects four of the 230 members of the Assembly of the Republic using the closed party-list proportional representation electoral system. At the 2025 legislative election it had 162,574 registered electors.

Electoral system Castelo Branco currently elects four of the 230 members of the Assembly of the Republic using the closed party-list proportional representation electoral system. Seats are allocated using the D'Hondt method.

Election results Summary

Election Unitary DemocratsCDU / APU / PCP Left BlocBE / UDP LIVREL SocialistsPS / FRS People Animals NaturePAN Democratic RenewalPRD Social DemocratsPSD / PàF / AD / PPD LiberalsIL CDS – People'sCDS–PP / CDS ChegaCH / PPV/CDC / PPV colspan=3 colspan=3 colspan=3 colspan=3 colspan=3 colspan=3 colspan=3 colspan=3 colspan=3 colspan=3 Votes % Seats Votes % Seats Votes % Seats Votes % Seats Votes % Seats Votes % Seats Votes % Seats Votes % Seats Votes % Seats Votes % Seats2025 2,228 2.20% 0 1,716 1.69% 0 2,652 2.62% 0 29,764 29.39% 1 946 0.93% 0 33,625 33.20% 2 3,146 3.11% 0 24,322 24.02% 12024 2,373 2.25% 0 4,450 4.23% 0 2,172 2.06% 0 37,067 35.21% 2 1,427 1.36% 0 30,812 29.27% 1 2,961 2.81% 0 21,141 20.08% 12022 2,784 2.98% 0 4,069 4.35% 0 775 0.83% 0 45,634 48.81% 3 935 1.00% 0 26,240 28.07% 1 2,444 2.61% 0 1,502 1.61% 0 7,959 8.51% 02019 4,451 4.99% 0 10,353 11.60% 0 834 0.93% 0 38,313 42.94% 3 2,231 2.50% 0 24,676 27.65% 1 543 0.61% 0 3,480 3.90% 0 1,187 1.33% 02015 6,286 6.29% 0 10,450 10.45% 0 507 0.51% 0 40,502 40.52% 2 860 0.86% 0 36,803 36.82% 2 2011 5,384 5.12% 0 4,609 4.38% 0 38,317 36.41% 2 770 0.73% 0 41,754 39.68% 2 10,571 10.05% 0 219 0.21% 02009 5,937 5.25% 0 10,632 9.40% 0 48,105 42.54% 2 34,925 30.88% 2 9,843 8.70% 0 250 0.22% 02005 4,678 3.86% 0 4,660 3.85% 0 69,795 57.63% 4 33,240 27.44% 1 6,590 5.44% 0 2002 3,915 3.34% 0 1,798 1.53% 0 55,140 46.98% 3 45,771 39.00% 2 8,491 7.24% 0 1999 6,444 5.37% 0 1,522 1.27% 0 63,309 52.77% 3 39,176 32.66% 2 7,660 6.38% 0 1995 4,771 3.56% 0 792 0.59% 0 72,760 54.32% 3 43,962 32.82% 2 9,863 7.36% 0 1991 6,150 4.66% 0 43,777 33.16% 2 1,250 0.95% 0 69,867 52.92% 3 5,269 3.99% 0 1987 9,752 7.34% 0 978 0.74% 0 30,784 23.18% 2 8,177 6.16% 0 71,610 53.93% 4 6,396 4.82% 0 1985 12,575 9.26% 0 1,457 1.07% 0 26,073 19.21% 1 34,383 25.33% 2 43,874 32.32% 3 13,555 9.99% 0 1983 15,616 11.70% 0 873 0.65% 0 51,483 38.57% 3 42,461 31.81% 2 18,264 13.68% 1 1980 15,946 10.83% 0 1,115 0.76% 0 46,182 31.37% 2 77,675 52.76% 4 1979 19,071 12.89% 0 2,887 1.95% 0 42,659 28.82% 2 76,658 51.80% 4 1976 9,369 7.16% 0 1,520 1.16% 0 51,822 39.61% 3 32,212 24.62% 2 28,257 21.60% 2

(Figures in italics represent alliances.)

Detailed 2020s 2025 Results of the 2025 legislative election held on 18 May 2025:

Party Votes % Seats Democratic Alliance AD 33,625 33.20% 2 Socialist Party PS 29,764 29.39% 1 Chega CH 24,322 24.02% 1 Liberal Initiative IL 3,146 3.11% 0 LIVRE L 2,652 2.62% 0 Unitary Democratic Coalition CDU 2,228 2.20% 0 National Democratic Alternative ADN 1,874 1.85% 0 Left Bloc BE 1,716 1.69% 0 People Animals Nature PAN 946 0.93% 0 Portuguese Workers' Communist Party PCTP 301 0.30% 0 React, Include, Recycle RIR 199 0.20% 0 Volt Portugal Volt 198 0.20% 0 People's Monarchist Party PPM 154 0.15% 0 Ergue-te E 145 0.14% 0Valid votes 101,270 100.00% 4Blank votes 1,494 1.44% Rejected votes – other 1,312 1.26% Total polled 104,076 64.02% Registered electors 162,574

The following candidates were elected:: Ricardo Aires (AD); Nuno Fazenda (PS); Pedro Reis (AD); and João Ribeiro (CH).

2024 Results of the 2024 legislative election held on 10 March 2024:

Party Votes % Seats Socialist Party PS 37,067 35.21% 2 Democratic Alliance AD 30,812 29.27% 1 Chega CH 21,141 20.08% 1 Left Bloc BE 4,450 4.23% 0 Liberal Initiative IL 2,961 2.81% 0 Unitary Democratic Coalition CDU 2,373 2.25% 0 LIVRE L 2,172 2.06% 0 National Democratic Alternative ADN 1,492 1.42% 0 People Animals Nature PAN 1,427 1.36% 0 Portuguese Workers' Communist Party PCTP 437 0.42% 0 React, Include, Recycle RIR 367 0.35% 0 New Right ND 316 0.30% 0 Volt Portugal Volt 168 0.16% 0 Ergue-te E 100 0.09% 0Valid votes 105,283 100.00% 4Blank votes 1,530 1.41% Rejected votes – other 1,447 1.34% Total polled 108,260 66.18% Registered electors 163,578

The following candidates were elected: Patrícia Caixinha (PS); Nuno Fazenda (PS); Liliana Reis (AD); and João Ribeiro (CH).

2022 Results of the 2022 legislative election held on 30 January 2022:

Party Votes % Seats Socialist Party PS 45,634 48.81% 3 Social Democratic Party PSD 26,240 28.07% 1 Chega CH 7,959 8.51% 0 Left Bloc BE 4,069 4.35% 0 Unitary Democratic Coalition CDU 2,784 2.98% 0 Liberal Initiative IL 2,444 2.61% 0 CDS – People's Party CDS–PP 1,502 1.61% 0 People Animals Nature PAN 935 1.00% 0 LIVRE L 775 0.83% 0 Portuguese Workers' Communist Party PCTP 313 0.33% 0 React, Include, Recycle RIR 239 0.26% 0 National Democratic Alternative ADN 176 0.19% 0 Earth Party PT 154 0.16% 0 Socialist Alternative Movement MAS 91 0.10% 0 We, the Citizens! NC 78 0.08% 0 Ergue-te E 59 0.06% 0 Portuguese Labour Party PTP 43 0.05% 0Valid votes 93,495 100.00% 4Blank votes 1,117 1.17% Rejected votes – other 1,126 1.18% Total polled 95,738 57.58% Registered electors 166,269

The following candidates were elected: Cláudia André (PSD); Ana Abrunhosa (PS); João Paulo Catarino (PS); and Nuno Fazenda (PS).

2010s 2019 Results of the 2019 legislative election held on 6 October 2019:

Party Votes % Seats Socialist Party PS 38,313 42.94% 3 Social Democratic Party PSD 24,676 27.65% 1 Left Bloc BE 10,353 11.60% 0 Unitary Democratic Coalition CDU 4,451 4.99% 0 CDS – People's Party CDS–PP 3,480 3.90% 0 People Animals Nature PAN 2,231 2.50% 0 Chega CH 1,187 1.33% 0 LIVRE L 834 0.93% 0 Alliance A 715 0.80% 0 Portuguese Workers' Communist Party PCTP 694 0.78% 0 Liberal Initiative IL 543 0.61% 0 React, Include, Recycle RIR 541 0.61% 0 United Party of Retirees and Pensioners PURP 273 0.31% 0 National Renewal Party PNR 247 0.28% 0 Earth Party PT 226 0.25% 0 People's Monarchist Party PPM 183 0.21% 0 Portuguese Labour Party PTP 157 0.18% 0 Democratic Republican Party PDR 125 0.14% 0Valid votes 89,229 100.00% 4Blank votes 2,250 2.40% Rejected votes – other 2,216 2.37% Total polled 93,695 55.09% Registered electors 170,075

The following candidates were elected: Cláudia André (PSD); Eurico Brilhante Dias (PS); Hortense Martins (PS); and Nuno Fazenda (PS).

2015 Results of the 2015 legislative election held on 4 October 2015:

Party Votes % Seats Socialist Party PS 40,502 40.52% 2 Portugal Ahead PàF 36,803 36.82% 2 Left Bloc BE 10,450 10.45% 0 Unitary Democratic Coalition CDU 6,286 6.29% 0 Democratic Republican Party PDR 1,086 1.09% 0 Portuguese Workers' Communist Party PCTP 1,080 1.08% 0 People Animals Nature PAN 860 0.86% 0 National Renewal Party PNR 508 0.51% 0 LIVRE L 507 0.51% 0 People's Monarchist Party PPM 496 0.50% 0 The Earth Party Movement MPT 464 0.46% 0 ACT! (Portuguese Labour Partyand Socialist Alternative Movement) AGIR 374 0.37% 0 United Party of Retirees and Pensioners PURP 272 0.27% 0 We, the Citizens! NC 267 0.27% 0Valid votes 99,955 100.00% 4Blank votes 2,091 2.01% Rejected votes – other 2,166 2.08% Total polled 104,212 57.58% Registered electors 180,996

The following candidates were elected: Álvaro Batista (PàF); Eurico Brilhante Dias (PS); Manuel Frexes (PàF); and Hortense Martins (PS).

2011 Results of the 2011 legislative election held on 5 June 2011:

Party Votes % Seats Social Democratic Party PSD 41,754 39.68% 2 Socialist Party PS 38,317 36.41% 2 CDS – People's Party CDS–PP 10,571 10.05% 0 Unitary Democratic Coalition CDU 5,384 5.12% 0 Left Bloc BE 4,609 4.38% 0 Portuguese Workers' Communist Party PCTP 1,454 1.38% 0 Party for Animals and Nature PAN 770 0.73% 0 Portuguese Labour Party PTP 543 0.52% 0 National Renewal Party PNR 428 0.41% 0 People's Monarchist Party PPM 425 0.40% 0 The Earth Party Movement MPT 403 0.38% 0 Hope for Portugal Movement MEP 355 0.34% 0 Pro-Life Party PPV 219 0.21% 0Valid votes 105,232 100.00% 4Blank votes 2,943 2.67% Rejected votes – other 1,928 1.75% Total polled 110,103 57.76% Registered electors 190,614

The following candidates were elected: Carlos Costa Neves (PSD); Carlos São Martinho (PSD); Fernando Serrasqueiro (PS); and José Sócrates (PS).

2000s 2009 Results of the 2009 legislative election held on 27 September 2009:

Party Votes % Seats Socialist Party PS 48,105 42.54% 2 Social Democratic Party PSD 34,925 30.88% 2 Left Bloc BE 10,632 9.40% 0 CDS – People's Party CDS–PP 9,843 8.70% 0 Unitary Democratic Coalition CDU 5,937 5.25% 0 Portuguese Workers' Communist Party PCTP 1,130 1.00% 0 Merit and Society Movement MMS 508 0.45% 0 Portuguese Labour Party PTP 402 0.36% 0 People's Monarchist Party PPM 394 0.35% 0 The Earth Party Movement and Humanist Party MPT-PH 352 0.31% 0 Hope for Portugal Movement MEP 348 0.31% 0 National Renewal Party PNR 263 0.23% 0 Pro-Life Party PPV 250 0.22% 0Valid votes 113,089 100.00% 4Blank votes 1,993 1.70% Rejected votes – other 2,297 1.96% Total polled 117,379 60.57% Registered electors 193,786

The following candidates were elected: Carlos Costa Neves (PSD); Carlos São Martinho (PSD); Fernando Serrasqueiro (PS); and José Sócrates (PS).

2005 Results of the 2005 legislative election held on 20 February 2005:

Party Votes % Seats Socialist Party PS 69,795 57.63% 4 Social Democratic Party PSD 33,240 27.44% 1 CDS – People's Party CDS–PP 6,590 5.44% 0 Unitary Democratic Coalition CDU 4,678 3.86% 0 Left Bloc BE 4,660 3.85% 0 Portuguese Workers' Communist Party PCTP 947 0.78% 0 New Democracy Party ND 619 0.51% 0 Humanist Party PH 326 0.27% 0 National Renewal Party PNR 263 0.22% 0Valid votes 121,118 100.00% 5Blank votes 1,764 1.42% Rejected votes – other 1,753 1.41% Total polled 124,635 65.96% Registered electors 188,963

The following candidates were elected: Cristina Granada (PS); Valter Lemos (PS); Nuno Morais Sarmento (PSD); Fernando Serrasqueiro (PS); and José Sócrates (PS).

2002 Results of the 2002 legislative election held on 17 March 2002:

Party Votes % Seats Socialist Party PS 55,140 46.98% 3 Social Democratic Party PSD 45,771 39.00% 2 CDS – People's Party CDS–PP 8,491 7.24% 0 Unitary Democratic Coalition CDU 3,915 3.34% 0 Left Bloc BE 1,798 1.53% 0 Portuguese Workers' Communist Party PCTP 818 0.70% 0 People's Monarchist Party PPM 402 0.34% 0 Humanist Party PH 394 0.34% 0 The Earth Party Movement MPT 370 0.32% 0 National Renewal Party PNR 258 0.22% 0Valid votes 117,357 100.00% 5Blank votes 981 0.82% Rejected votes – other 1,334 1.11% Total polled 119,672 62.65% Registered electors 191,027

The following candidates were elected: Maria Elisa Domingues (PSD); Valter Lemos (PS); Fernando Penha (PSD); Fernando Serrasqueiro (PS); and José Sócrates (PS).

1990s 1999 Results of the 1999 legislative election held on 10 October 1999:

Party Votes % Seats Socialist Party PS 63,309 52.77% 3 Social Democratic Party PSD 39,176 32.66% 2 CDS – People's Party CDS–PP 7,660 6.38% 0 Unitary Democratic Coalition CDU 6,444 5.37% 0 Left Bloc BE 1,522 1.27% 0 Portuguese Workers' Communist Party PCTP 845 0.70% 0 People's Monarchist Party PPM 589 0.49% 0 The Earth Party Movement MPT 424 0.35% 0Valid votes 119,969 100.00% 5Blank votes 1,044 0.85% Rejected votes – other 1,536 1.25% Total polled 122,549 63.82% Registered electors 192,029

The following candidates were elected: Manuel Frexes (PSD); António Guterres (PS); Fernando Penha (PSD); Fernando Serrasqueiro (PS); and José Sócrates (PS).

1995 Results of the 1995 legislative election held on 1 October 1995: