Prime Minister Mark Carney is now just one seat away from a majority government.

Conservative MP Marilyn Gladu of Sarnia-Lambton-Bkejwanong in Ontario has crossed the floor to the Liberals.

In a statement she says she made a choice to do the “best thing” for her community’s priorities and “most importantly, for our country”.

She is the fifth MP to make the move in the same number of months.

With three by-elections on the horizon Monday, the Liberals now only need to win one of those seats to grab a narrow majority, bringing them to 172 seats in the House of Commons. The federal Conservatives now hold 140.

More to come….