The New York chapter of gay GOP group Log Cabin Republicans has joined the push to legalize gay marriage in the state.

Supporters announced on Wednesday that they'll attempt to overcome a 2009 loss in the Senate by banding together four prominent gay rights groups – Human Rights Campaign (HRC), Empire State Pride Agenda, Freedom to Marry and Marriage Equality New York (MENY) – under a single umbrella organization called New Yorkers United for Marriage.

The new effort will be coordinated from Governor Andrew Cuomo's office.

On Thursday, the Republican gay group announced it would become the 5th group to lobby for marriage equality.

Gregory T. Angelo, chairman of the group's New York chapter, announced the group's support.

“Marriage is not a progressive or conservative issue. It's an issue of equal rights for taxpaying citizens in this state,” he said in a statement. “For the first time, we are truly united in our fight to ensure every single New Yorker has the right to marry the person he or she loves.”

The Log Cabin Republicans have their work cut out for them: not a single Republican in the Senate voted for the bill in 2009.

The group's entry, however, is another sign of the GOP's increasing support for marriage equality. A legal challenge to California's gay marriage ban, Proposition 8, is being litigated by former solicitor general Ted Olson, a Republican, and Republicans have heavily financed the effort.