Previously, marriage had been put before the people 32 times, and voters had affirmed marriage as the union of a man and a woman in each case.
Question 1 on the Maine ballot proposed to legally recognize “gay marriage,” reversing a similar referendum in 2009 that was narrowly defeated.
With 45 percent of precincts reporting on the night of the Nov. 6 election, the measure held a 55-46 percent lead, enough for analysts to project its passage.