The Vice-President of Fianna Fáil Gerry Collins believes a new coalition Government of Fine Gael and Labour will not last the full term.
The former TD said the differences between the parties will drive them apart and there will be another election within two years.
His comments come as the Fianna Fáil leader Micheál Martin embarks on his second day of campaigning in counties Meath and Monaghan.
Mr Collins said he is confident the party will be back in power within two years.