A federal appeals court ruled today that it will not review a three-judge panel's decision to overturn California's Proposition 8, which banned same-sex marriage.
Proposition 8 banned gay marriage in California, before it was ruled unconstitutional last year. Proponents plan to appeal the ruling to the U.S. Supreme Court.
That would put battle for same-sex marriage on a national stage.
The ruling comes after a federal court ruled that the Defense of Marriage Act (DOMA), which says states don't have to recognize gay marriages in other states and defines marriage as between a man and a woman for federal purposes, is unconstitutional.
The Supreme Court could also decide to hear that case next year.
In February, a three-judge panel in California voted 2-1 against the voter-approved gay marriage ban, upholding an earlier decision by Judge Vaughn Walker.
The panel said that by denying same-sex marriage rights, Proposition 8 violated the equal protection clause and due process clause of the U.S. Constitution.