ATHENS, Greece (AP) — Greece's parliament has scheduled a confidence vote for late Wednesday following the collapse of Prime Minister Alexis Tsipras' governing coalition over a proposed deal to end a decades-old dispute with Macedonia.

The nationalist Independent Greeks party ended its four-year partnership with Tsipras' left-wing Syriza party on Sunday. The government now needs the backing of six lawmakers from opposition parties or independents to avoid a snap election.

Three had openly declared their support for the government as of Monday.

The pre-vote debate is set to start with remarks by Tsipras, who has vowed to complete his term and call an October election.

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Greek lawmakers haven't yet voted on whether to ratify the deal with Macedonia. It requires the country to be renamed North Macedonia and Greece to stop blocking its NATO membership.