Canada’s New Democratic Party issued its declaration moments before Prime Minister Trudeau was set to reveal a revamped cabinet.

The head of a Canadian political party that has been keeping Prime Minister Justin Trudeau in power said on Friday he would present a motion of no-confidence in the government next year. New Democratic Party leader Jagmeet Singh made the commitment in an open letter.

A Canadian opposition leader said his caucus plans to vote against Justin Trudeau’s government, a move that would plunge the country into an election early next year unless the prime minister seeks a temporary suspension of parliament.