Democrat Jared Golden beats GOP's Poliquin in Maine

Democrat Jared Golden defeated incumbent Rep. Bruce PoliquinBruce Lee PoliquinMaking the case for ranked-choice voting The 31 Trump districts that will determine the next House majority Maine governor certifies Dem's win in disputed House race, but calls it 'stolen election' MORE (R-Maine) in a ranked-choice runoff Thursday morning, more than a week after the election.

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State election officials declared Golden the winner in Maine's 2nd District race shortly after noon on Thursday. It was the first use of ranked balloting in a congressional election, according to The Associated Press.

Poliquin last week sued in an attempt to stop the ranked balloting system from being used to declare a winner in the race, but a judge denied the request. 

Under the new voting system, additional rounds of voting were required because neither Poliquin nor Golden won a majority of the votes on Tuesday. The new voting system allows voters to rank candidates from first to last. 

U.S. District Court Judge Lance Walker in denying the injunction request left open the possibility of a legal battle over the results, according to the Portland Press Herald.

Golden, a Marine veteran, ran on progressive policies such as "Medicare for all." The Democratic victory is a swing back for the district after it went for President TrumpDonald John TrumpLiz Cheney: 'Send her back' chant 'inappropriate' but not about race, gender Booker: Trump is 'worse than a racist' Top Democrat insists country hasn't moved on from Mueller MORE in 2016. It previously went for former President Obama. 

The district, in the rural, northern area of Maine, is a rare area of New England potentially hospitable to congressional Republicans, despite Poliquin's loss. 

Updated at 12:40 p.m.