Washington State Backs Gay Marriage Joins four-state Election Day sweep By Matt Cantor, Newser User Posted Nov 9, 2012 5:06 AM CST 22 comments Comments Supporters of Referendum 74, which would uphold the state's new same-sex marriage law, cheer at a news conference Wednesday, Nov. 7, 2012, in Seattle. Supporters of gay marriage in Washington state declared... (AP Photo/Elaine Thompson) (Newser) – Voters have approved same-sex marriage in Washington state after a tight vote, meaning marriage-equality advocates won all four of their Election Day battles: Maine and Maryland backed gay marriage, while Minnesota nixed a constitutional ban on such unions. Opponents conceded yesterday in Washington: "With additional results showing that we have not closed the gap, it now appears clear that Referendum 74 will be narrowly approved," says the head of one activist group. "But while we are disappointed, we are not defeated." As of mid-afternoon yesterday, Referendum 74 was leading with 51.96% of the vote, compared to 48.04% against it. The majority of counties voted against the measure, but King County, home to Seattle, helped push it through, the Post-Intelligencer reports. Noted Gov. Christine Gregoire: "Voters stood up for what is right and what is just and said that all Washington families are equal under the law." Nine states now recognize same-sex marriage, though Washington, Maine, and Maryland are the only states where it was won via ballot measure, the AP notes.