The Hill reports:
Gay marriage looms as a significant issue in the 2012 campaign, and conservatives hope it will have a similar impact to 2004 when it helped George W. Bush win reelection.
New York’s passage of a law late Friday legalizing gay marriage has energized the debate in Washington and will pressure President Obama to address it further.
The issue could rise to political significance early next year when Republican leaders in New Hampshire plan to vote on a repeal of state law allowing same-sex marriage.
... While Obama is under strong pressure from the gay-rights community to endorse same-sex marriage it could hurt him in swing states that prohibit it. Florida, Michigan, Ohio and Virginia have state constitutional amendments banning gay marriage and expected to be closely contest in 2012.