Gilmore vows to fight to the end
Labour has warned against presuming the outcome of the election, claiming a chunk of voters remains undecided or open to switching support.
With two full days of canvassing left, leader Eamon Gilmore said there was a perception the campaign was "done and dusted".
"It's not," he said.
"Nobody has cast their votes yet and, according to the opinion polls, in the order of 30pc of the electorate are either undecided or open to changing their mind before Friday.
"There's some people who have written the script as if this election is already over and the winners are declared and so on. This election does not finish until 10pm on Friday evening.
"That's why we're going to continue using every medium available to us."
Mr Gilmore - who has suffered a dip in support in the opinion polls - was canvassing on Dublin's Grafton Street ahead of the fourth and final television debate of the campaign, when he will go head-to-head with Fine Gael leader Enda Kenny and Fianna Fail's Micheal Martin.
He said the country needed a stable government with a Fine Gael/Labour coalition.
"We have to ensure, of course, that we have a government that is stable and that is capable of dealing with the big challenges that the country is faced with," he said.
"I think a single party Fine Gael government, or Fine Gael supported by a handful of independents, would not provide the stability that the country needs."