Jagmeet Singh has officially resigned as an Ontario Member of Provincial Parliament, leaving an empty seat in the Bramalea-Malton-Gore riding.

Singh has served the riding since 2011 when he became the first NDP candidate to win a seat in Peel Region.

“It has been an honour serving the people of Bramalea-Gore-Malton and I’m looking forward to continuing this work on the federal level, building a fairer and just Canada,” Singh said in a media release.

Singh clinched federal NDP leadership on Oct. 1 in a landslide win, becoming the first visible minority to win federal leadership in Canada.

Singh doesn’t yet hold a seat in the House of Commons and has said he’s in no rush to claim one, and when he’s ready chances are he’ll go up against popular Brampton MP Raj Grewal.

Since the recent change of Brampton’s provincial electoral boundaries, Singh’s current riding of Bramalea-Malton-Gore will become part of Brampton East in the 2018 election to align with the city’s federal boundaries.

If Singh wishes to run in his current area, he’ll go up against Grewal who has indicated he’s ready for a showdown.

It isn’t clear whether the vacancy Singh left will be filled in a by-election or whether it will stay empty until the May 2018 provincial election.