WATCH: Democrat Troy Jackson speaks after Maine Sen. Susan Collins concedes

Democrat Troy Jackson won Maine’s US Senate election, defeating Republican incumbent Susan Collins, who conceded after serving in the Senate since 1997. The result gives Democrats a chance to flip a Republican-held seat in a state that has backed Democratic presidential candidates since 1992.

Jackson, a former Maine Senate president, became the Democratic nominee in July after primary winner Graham Platner withdrew. The party had faced a chaotic primary season and was briefly without a candidate; the Associated Press declared Jackson the winner at 1:02 a.m. EST, as Collins ended her bid for a sixth term.