Maine Democratic Gov. Janet Mills suspended her campaign for Senate on Thursday, as her progressive challenger, oyster farmer Graham Platner, continued to lead in the polls and in fundraising.

It’s a shocking fall off for the incumbent governor, who was once the preferred candidate of national Democrats in the race.

And it sets up a likely general election matchup between Platner and Sen. Susan Collins (R-Maine), a five-term incumbent with a formidable electoral track record who Democrats are nonetheless hopeful they can knock off amid backlash to Republicans and President Donald Trump.

“While I have the drive and passion, commitment and experience, and above all else – the fight – to continue on, I very simply do not have the one thing that political campaigns unfortunately require today: the financial resources,” Mills said in a statement Thursday morning.

This is a breaking news article that will be updated.