Mississauga Mayor Bonnie Crombie has officially registered to run for the leadership of the Ontario Liberal Party ahead of her campaign launch on Wednesday.

According to Elections Ontario, Crombie filed her nomination papers Tuesday afternoon making her the fourth candidate in the race, alongside Liberal MPs Nate Erskine-Smith and Yasir Naqvi and Liberal MPP Ted Hsu.

It’s a long way until December 2nd when the new Ontario Liberal Leader is announced, but Crombie was asked if Premier Doug Ford sees her as a threat.

“You know, he and I have spoken about this,” Crombie explained, “We both want what’s best for Ontario, we just have different visions on how to get there.”

On May 24th after Crombie announcing she was exploring a bid for the Liberal leadership, the premier was asked about his potential rival.

“First reaction is what took you so long?” Ford quipped, “She’s been campaigning for five years. My second reaction is bring it on!”

Crombie, who’s seen as the frontrunner based on some very early polling has invited supporters to a Mississauga college campus for a special announcement Wednesday when she’ll unveil her campaign.