Advocates say they'll pursue legal action and legislation to allow same-sex marriage in New Jersey following the U.S. Supreme Court ruling that invalidates part of the federal Defense of Marriage Act.

The issue could be a factor in the governor's race.

Gov. Chris Christie says he remains opposed to same-sex marriage.

"I believe that the institution of marriage for 2,000 years has been between a man and a woman, and I believe that it should continue to be," Christie said.

Speaking Thursday on the "Ask the Governor" show on New Jersey 101.5, Christie says if lawmakers agreed to put a constitutional amendment on the ballot to legalize same sex marriage and voters approved it, he'd enforce the law.

Democratic gubernatorial candidate, state Sen. Barbara Buono, is encouraging lawmakers to override Christie's veto of the same-sex marriage bill.

"This is a governor who's shown an antipathy toward our gay and lesbian sisters and brothers, and we need to stand up to that," Buono said.

Buono says gay marriage is a defining issue in the governor's race but isn't sure whether her support for it will encourage more Democratic voters to show up at the polls on election day.