Independent candidate Catherine Connolly is now leading Fine Gael’s Heather Humphreys by 19 points, in the final poll ahead of election day on Friday.
The latest Business Post/Red C poll shows that Ms Connolly is on 44% support, an increase of eight points compared to the previous poll.
This compares to Ms Humphreys, who remains unchanged on 25%.
Fianna Fáil’s Jim Gavin, who dropped out of the race earlier this month but who remains on the ballot paper, is on 10%. This is down by 2 points.
Undecided voters, meanwhile, are at 21%, a fall of six points.
As part of the poll, undecided voters were asked to pick a candidate, with only half opting to do so.
This was split between Ms Connolly and Ms Humphreys evenly, which increased the Independent candidate to 49% compared to the Fine Gael candidate on 30%.
Excluding Mr Gavin and undecided voters, Ms Connolly’s support is increased to 55%. Ms Humphreys rises to 34%.