Irish election officials said on November 26 that Sinn Fein candidate Pearse Doherty had won a long-awaited by-election in Donegal with an overwhelming 40% of the vote.
The election was blocked for months before it was forced on Prime Minister Brian Cowen by the Irish courts.
Cowen faces a struggle to win votes on raising taxes and cutting spending when the 2011 budget is unveiled in parliament on December 7.