Sara Gideon, Maine Republican Sen. Susan Collins' 2020 challenger, conceded the race with nearly $15 million in donations in the bank.
The Democratic Speaker of the Maine House of Representatives lost to Collins by 70,237 votes on Election Day, or 50.99% to 42.41%.
The election -- a referendum on Collins -- turned out to be the most expensive political campaign in state history. According to the Center for Responsive Politics, Collins raised more than $29 million and spent around the same amount, and Gideon raised close to $75 million and spent nearly $60 million.
Gideon's $14.8 million in cash on hand was disclosed Friday in a Federal Election Commission report. The report shows that from Oct.