Groups opposed to gay marriage are readying campaigns in New York.

On Wednesday, the National Organization for Marriage (NOM), the nation's most vociferous opponent of gay marriage, began mobilizing its members with an “urgent marriage alert.”

“The New York State Legislature is expected to vote on a same-sex marriage bill soon,” NOM President Brian Brown wrote. “Please take action today urging your senator and assemblyman to stand for marriage.”

According to NOM, lawmakers will consider the bill after a two-week recess that ends on May 2nd.

“That gives us two weeks to contact legislators in defense of marriage!”

The Human Rights Campaign (HRC), the nation's largest gay rights advocate, noted that a second group, the Coalition to Save Marriage in New York – described by HRC as “a veritable 'Who's Who' of anti-LGBT groups across the state' – is also urging members to take action.

Governor Andrew Cuomo has said he'll helm this year's effort to legalize gay marriage in the state later this Spring.

HRC's New Yorkers for Marriage Equality campaign began last year and features prominent celebrities and politicians urging New Yorkers to support marriage equality.

A poll released last week shows a majority (58%) of New York voters support giving gay and lesbian couples the right to marry. Despite popular voter support, passage in the Republican-controlled Senate, where a similar bill died in 2009, remains a major hurdle.