Gay Marriage Ruling a Challenge for Both Parties

SAN FRANCISCO — A federal judge’s decision on Wednesday overturning Proposition 8 California’s ban on same-sex marriage has tossed a largely unwanted issue into the middle of the November midterm elections.

The decision, which ruled Proposition 8 unconstitutional, has complicated the political tasks before President Obama, whose aides had to explain in the wake of the decision that the president supported equal gay rights but opposed marriage rights for gay men and lesbians.

Meanwhile, Republicans said that dwelling on the issue could become a distraction in the effort to win back the House or Senate from Democrats this fall. At a meeting of the Republican National Committee in Kansas City, Mo., several party leaders and strategists said it would be a mistake for the midterm election campaign to suddenly become focused on gay marriage, immigration or other hot-button issues. The only path to winning control of Congress, they said, rested on making an economic argument.