The leader of Vanuatu's Reunification of Movement for Change says his party is still negotiating about which way it will vote when parliament sits to elect a Prime Minister on Monday.
Ahead of the vote, two groupings of MPs claim to have a majority of MPs - one led by the caretaker Prime Minister Sato Kilman, the other by Edward Natapei's Vanuaaku Pati.
The RMC leader, Charlot Salwai, says his party's three MPs are part of a middle bloc of MPs led by former Prime Minister Ham Lini's National United Party which appears to be wavering between both of the main groupings.
Mr Salwai says he hopes that an agreement can be reached over the formation over government before Monday.
"It does not mean that we're undecided. We have decided. We want to stay in the government. But it depends, we need to come to a consensus as to who will be the leader of the government."