A series of opinion polls to be published in tomorrow's newspapers show the Yes side leads the No side in the final phase of the EU fiscal treaty campaign.
Separate polls in the Sunday Times, the Sunday Independent and the Sunday Business Post indicate that undecided voters could still sway the outcome of the referendum.
All three polls to be published tomorrow put the Yes side ahead in the final days before voting in the fiscal treaty referendum on Thursday.
When undecided voters are excluded both the Sunday Times and the Sunday Independent polls show that 60% of voters intend to say Yes, with 40% saying No.
However the SBP poll shows a reduced lead for the Yes side, with 4% of voters having switched their intentions from Yes to No in the past week.
"The Yes lead has narrowed significantly since last week but, as the referendum campaign enters its final days, the fiscal treaty is still on course to be passed on Thursday," said Pat Leahy, political editor of The Sunday Business Post.
"When the undecided voters are excluded, the poll shows the Yes side leading by 58% to 42% among likely voters."
Including undecided voters at 16%, the SBP poll gives the Yes camp 49% support and the No side 35%.
The SBP poll was conducted among more than 1,000 voters nationwide last Monday, Tuesday and Wednesday.
Meanwhile the Sunday Times says 20% of voters are undecided, and the Sunday Independent puts that figure at 27%.