NPR is reporting [npr.org] that Democrat Jared Golden has been declared the winner of Maine House District 2 after ranked-choice voting boosted his vote count over Republican Bruce Poliquin. Poliquin had received more initial votes than Golden, but did not receive the requisite 50% of the vote.
Maine's new ranked-choice system of voting [wikipedia.org] allows voters to rank candidates in their order of preference and to transfer their votes if no candidate gets more than 50 percent.