Just over a third of voters believe Sinn Féin can solve the housing crisis if in power.
The finding - in the latest Red C / Sunday Business Post poll - will come as a blow to the party, which has been highly critical of the government's housing policy.
Just 36 per cent believe the main opposition party could make serious headway on the housing crisis, if successful at the next election.
However - in some good news for Sinn Féin - almost half of voters believer party leader, Mary Lou McDonald, would make a good taoiseach.
The poll continues to rank Sinn Féin as the most popular party in Ireland, at 31 per cent.
Fine Gael is also unchanged at 22 per cent, while Fianna Fáil is up one, to 16 per cent.
The poll has also puts Tánaiste and Foreign Affairs Minister Micheál Martin as the highest-performing minister at 28 per cent - with his Fianna Fáil colleague in the Department of Housing, Darragh O'Brien, the lowest-ranking at 4 per cent.
