Their behind-the-scenes financial support — about $1 million in donations, delivered in recent weeks to a new coalition of gay rights organizations — could alter the political calculus of Albany lawmakers, especially the Republican state senators in whose hands the fate of gay marriage rests.
The donors represent some of New York’s wealthiest and most politically active figures and include Paul E. Singer, a hedge fund manager and top-tier Republican donor, as well as two other financiers, Steven A. Cohen and Clifford S. Asness.
At the same time, Mayor Michael R. Bloomberg, a billionaire businessman and philanthropist who has been a major contributor to Senate Republicans in New York, plans a significant push for same-sex marriage: giving at least $100,000 of his own money, hosting a fund-raiser at an Upper East Side town house, traveling to Albany to lobby lawmakers and giving a speech on the issue.
The new donations represent roughly two-thirds of the same-sex marriage coalition’s fund-raising, making New York the rare state where a lobbying campaign in favor of legalizing gay unions is not being financed primarily by liberal donors and Democrats. The support is likely to jolt the traditional financial and political backers of gay rights causes, who now find themselves in the unfamiliar position of being outraised and outspent in New York.
The donations are financing an intensive campaign of television advertisements and grass-roots activism coordinated by New Yorkers United for Marriage, a group of same-sex marriage advocates. The campaign is aimed chiefly at persuading several members of the Senate Republican majority to join most Senate Democrats in backing same-sex marriage, which was defeated in the Senate in 2009. The State Assembly, controlled by Democrats, has repeatedly passed same-sex marriage bills.
The newly recruited donors argue that permitting same-sex marriage is consistent with conservative principles of personal liberty and small government.
“I’m a pretty straight-down-the-line small-government guy,” said Mr. Asness, who described himself as a libertarian who favored less government intrusion in both markets and personal affairs. Mr. Asness, a frequent Republican donor, has praised Tea Party activists on his blog and last year attended a conference of right-leaning donors held by Charles and David Koch, among the leading conservative philanthropists in the nation.
“This is an issue of basic freedom,” Mr. Asness said.
Some of those involved have made what might be termed the pro-business argument for same-sex marriage, arguing that the legalization of same-sex marriage would help keep New York economically competitive.
One of the donors, Daniel S. Loeb, who has donated hundreds of thousands of dollars to Republican candidates for federal office in the last two years, said he hoped to make clear to Republicans that same-sex marriage had a broad coalition of support.
“I think it is important in particular for Republicans to know this is a bipartisan issue,” Mr. Loeb said. “If they’re Republican, they will not be abandoned by the party for supporting this. On the contrary, I think they will find that there is a whole new world of people who will support them on an ongoing basis if they support this cause.”
Mr. Cohen, who runs SAC Capital Advisers and has become increasingly active in Republican fund-raising, described his views simply: “We believe in social justice for all Americans.”
The involvement of Mr. Singer is the most striking, given his devotion to conservative candidates and philanthropy: He is chairman of the Manhattan Institute, a right-leaning research group, and one of the most generous Republican donors in the country. But he also has a personal stake in the issue: he has a gay son who married his partner in Massachusetts, where same-sex marriage is legal.
