The New England governor who told President Donald Trump to his face she'd see him in court now plans to challenge Maine's Republican U.S. senator at the ballot box.

Maine Gov. Janet Mills (D) on Tuesday formally launched her bid to unseat Sen. Susan Collins (R-Maine), teeing up the latest high-profile primary to pit establishment and populist factions of the Democratic Party against each other.

The Maine secretary of state said authorities are investigating the 250 blank election ballots that were found in a resident's Amazon order last week.

The 77-year-old Mills faces a crowded and competitive primary. And if she unseats Collins, Mills will the oldest freshman senator in U.S. history.

Maine Secretary of State Shenna Bellows says a Newburgh woman claims she received 250 blank Maine absentee in an Amazon box on September 30. The package appeared to have been opened and resealed. The state says the ballots were found the same day the town of Ellsworth reported it was missing a shipment of 250 absentee ballots.

The state's top Democrat says the 'fundamental right to vote is under attack' because of a proposal to adopt Voter ID and increase restrictions on absentee voting.

Bellows has been a target of Republican ire in Maine since she removed President Donald Trump from the state’s 2024 presidential primary ballot under the Constitution’s insurrection clause. Trump appeared on the ballot after the U.S. Supreme Court intervened.

According to new polling, Maine Governor Janet Mills may be well placed to unseat Maine's incumbent Republican Senator, Susan Collins, in the midterm elections.