Sinn Féin's Pearse Doherty has said his party will talk to Fianna Fáil about forming a government if the current deal fails on Friday.
Ballots are still being cast by members of Fine Gael, Fianna Fáil and the Green Party, as Leo Varadkar has admitted there's no plan B if the programme for government fails.
Political Correspondent Seán Defoe reports - press PLAY