Portugal’s 2025 turnout and invalid ballots by constituency

The national total includes blank and invalid ballots

The official return records 6,319,969 ballots from 10,848,816 registered electors. The total consists of 6,059,321 valid votes, 87,654 blank ballots and 172,994 invalid ballots. Dividing all ballots by registered electors gives 58.25% turnout. Dividing only valid votes by the same electorate gives 55.85%. Source 1 Source 2

The two overseas constituencies had lower turnout

Europe recorded 256,784 ballots from 948,062 registered electors, or 27.09%. Outside Europe recorded 98,234 from 636,660, or 15.43%. Taken together, the overseas constituencies had 22.40% turnout. The other 20 constituencies combined had 64.39%, calculated from their electorates and ballot counts. Source 1

The largest gap between the two rates was in Europe

In the Europe constituency, 82,872 ballots were invalid and 1,264 blank, leaving 172,648 valid votes. Outside Europe had 32,960 invalid and 368 blank ballots, leaving 64,906 valid votes. The two districts contributed 115,832 invalid ballots, or 67.0% of the national invalid total. The return records those categories without establishing a reason for each individual ballot. Source 1 Source 2

Braga led on turnout, while Lisbon cast the most ballots

Braga had the highest constituency turnout at 69.70%, followed by Porto at 68.97%. Lisbon counted the most ballots at 1,274,521, with turnout of 66.59%. The national percentage weights each constituency by its electorate. The published note also identifies the electoral register as the source of the outside-Europe electorate after a transmission discrepancy. Source 1

Sources

• Portugal’s Diário da República consolidated 2025 legislative election results
• Portugal’s Diário da República published national election return