Results breakdown of the 2015 Portuguese legislative election

This is the results breakdown of the Assembly of the Republic election held in Portugal on 4 October 2015. The following tables show detailed results in each of the country's 22 electoral constituencies.

Electoral system
The Assembly of the Republic has 230 members elected to four-year terms. The number of seats to be elected by each district depends on the district magnitude. 226 seats are allocated proportionally by the number of registered voters in the 18 Districts in Mainland Portugal, plus Azores and Madeira, and 4 fixed seats are allocated for overseas voters, 2 seats for voters in Europe and another 2 seats for voters Outside Europe. The 230 members of Parliament are elected using the D'Hondt method and by a closed list proportional representation system. Members represent the country as a whole and not the constituencies in which they were elected.

Nationwide results
! rowspan="2" colspan="2" style="background:#e9e9e9; text-align:left;" alignleft|Parties ! rowspan="2" style="background:#e9e9e9; text-align:right;"|Votes ! rowspan="2" style="background:#e9e9e9; text-align:right;"|% ! rowspan="2" style="background:#e9e9e9; text-align:right;"|±pp swing ! colspan="5" style="background:#e9e9e9; text-align:center;"|MPs ! rowspan="2" style="background:#e9e9e9; text-align:right;"|MPs %/ votes % ! style="background:#e9e9e9; text-align:center;"|2011 ! style="background:#e9e9e9; text-align:center;"|2015 ! style="background:#e9e9e9; text-align:right;"|± ! style="background:#e9e9e9; text-align:right;"|% ! style="background:#e9e9e9; text-align:right;"|±
 * colspan=11| Assembly of the Republic election, 2015 results.svg
 * colspan=11| Assembly of the Republic election, 2015 results.svg
 * - style="background:#e9e9e9;"
 * (PSD/CDS–PP)
 * 1,993,504||36.86||10.9||124||102||22||44.35||10.5||1.20
 * 1,747,730||32.32||4.3||74||86||12||37.39||5.2||1.16
 * 550,945||10.19||5.0||8||19||11||8.26||4.8||0.81
 * 445,901||8.25||0.4||16||17||1||7.39||0.4||0.90
 * 80,841||1.49||N/A||7||5||2||2.17||0.9||1.45
 * 75,170||1.39||0.4||0||1||1||0.43||0.4||0.31
 * 61,920||1.13||N/A||N/A||0||N/A||0.00||N/A||0.0
 * 60,045||1.11||0.0||0||0||0||0.00||0.0||0.0
 * 39,330||0.73||N/A||N/A||0||N/A||0.00||N/A||0.0
 * 27,286||0.50||0.2||0||0||0||0.00||0.0||0.0
 * 22,627||0.42||0.0||0||0||0||0.00||0.0||0.0
 * 21,382||0.40||N/A||N/A||0||N/A||0.00||N/A||0.0
 * style="width:10px; background:#CC0033; text-align:center;"|
 * style="text-align:left;" |ACT! (Labour/Socialist Alternative)
 * 20,793||0.38||N/A||N/A||0||N/A||0.00||N/A||0.0
 * 14,916||0.28||0.0||0||0||0||0.00||0.0||0.0
 * 14,275||0.26||N/A||N/A||0||N/A||0.00||N/A||0.0
 * 13,899||0.26||N/A||N/A||0||N/A||0.00||N/A||0.0
 * 7,496||0.14||N/A||1||0||1||0.00||0.4||0.0
 * style="width:10px; background:#0093dd; text-align:center;"|
 * style="text-align:left;" |Alliance Azores (CDS–PP/PPM)
 * 3,624||0.07||N/A||0||0||0||0.00||0.0||0.0
 * style="width: 10px" bgcolor=#000080 align="center" |
 * align=left|Citizenship and Christian Democracy
 * 2,685 ||0.05||0.1||0||0||0||0.00||0.0||0.0
 * style="width: 10px" bgcolor=#CC0033 align="center" |
 * align=left|Labour
 * 1,744||0.03||N/A||0||0||0||0.00||0.0||0.0
 * - style="background:#e9e9e9;"
 * colspan="2" style="text-align:left; "|Total valid
 * style="width:65px; text-align:right; "|5,206,113
 * style="width:40px; text-align:right; "|96.27
 * style="width:40px; text-align:right; "|0.4
 * style="width:40px; text-align:right; "|230
 * style="width:40px; text-align:right; "|230
 * style="width:40px; text-align:right; "|0
 * style="width:40px; text-align:right; "|100.00
 * style="width:40px; text-align:right; "|0.0
 * style="width:40px; text-align:right; "|—
 * colspan=2|Blank ballots
 * 112,955||2.09||0.6||colspan=6 rowspan=4|
 * colspan=2|Invalid ballots
 * 89,024||1.65||0.3
 * - style="background:#e9e9e9;"
 * colspan="2" style="text-align:left; "|Total
 * style="width:65px; text-align:right; "|5,408,092
 * style="width:40px; text-align:right; "|100.00
 * style="width:40px; text-align:right; "|
 * colspan=2|Registered voters/turnout
 * 9,684,922||55.84||2.2
 * colspan=11 style="text-align:left;" | Source: Diário da República - Resultados Oficias
 * }
 * style="width:10px; background:#0093dd; text-align:center;"|
 * style="text-align:left;" |Alliance Azores (CDS–PP/PPM)
 * 3,624||0.07||N/A||0||0||0||0.00||0.0||0.0
 * style="width: 10px" bgcolor=#000080 align="center" |
 * align=left|Citizenship and Christian Democracy
 * 2,685 ||0.05||0.1||0||0||0||0.00||0.0||0.0
 * style="width: 10px" bgcolor=#CC0033 align="center" |
 * align=left|Labour
 * 1,744||0.03||N/A||0||0||0||0.00||0.0||0.0
 * - style="background:#e9e9e9;"
 * colspan="2" style="text-align:left; "|Total valid
 * style="width:65px; text-align:right; "|5,206,113
 * style="width:40px; text-align:right; "|96.27
 * style="width:40px; text-align:right; "|0.4
 * style="width:40px; text-align:right; "|230
 * style="width:40px; text-align:right; "|230
 * style="width:40px; text-align:right; "|0
 * style="width:40px; text-align:right; "|100.00
 * style="width:40px; text-align:right; "|0.0
 * style="width:40px; text-align:right; "|—
 * colspan=2|Blank ballots
 * 112,955||2.09||0.6||colspan=6 rowspan=4|
 * colspan=2|Invalid ballots
 * 89,024||1.65||0.3
 * - style="background:#e9e9e9;"
 * colspan="2" style="text-align:left; "|Total
 * style="width:65px; text-align:right; "|5,408,092
 * style="width:40px; text-align:right; "|100.00
 * style="width:40px; text-align:right; "|
 * colspan=2|Registered voters/turnout
 * 9,684,922||55.84||2.2
 * colspan=11 style="text-align:left;" | Source: Diário da República - Resultados Oficias
 * }
 * colspan=2|Registered voters/turnout
 * 9,684,922||55.84||2.2
 * colspan=11 style="text-align:left;" | Source: Diário da República - Resultados Oficias
 * }
 * colspan=11 style="text-align:left;" | Source: Diário da República - Resultados Oficias
 * }