Residents on a number of islands off Donegal coast are voting in the Referendum on the Eighth Amendment to the Constitution.
Ballots were cast on a number of islands, with polling stations opened at different times during the day.
Islanders went to the polls a day ahead of the rest of the country to allow for all eventualities in getting their votes to count centres in time.
In the northwest, 743 residents are registered to vote on five islands off Co Donegal.
Polling stations on Toraigh (Tory Island), Inis Bó Finne (Inishbofin) and Gola Island opened at 11am and were due to close at 3pm.
A total of 234 voters are registered to vote on the three islands, with 142 people eligible on Toraigh, 63 on Inis Bó Finne and 29 on Gola.
More than 500 people on Aranmore cast their ballots between 10.30am and 7pm, while the four people registered on Inishfree had a two-hour window to exercise their franchise between midday and 2pm.