ALBANY, N.Y. (CBSNewYork/AP) — A new poll released Monday shows New York Gov. Andrew Cuomo holding big leads over two potential Republican challengers and “Sex and the City” star Cynthia Nixon, who declared her run to challenge the Democrat as he seeks a third term in office.

“I love New York, and today I’m announcing my candidacy for governor,” Nixon said via Twitter.

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Her campaign fundraising website declares the former “Sex and the City” actor “…hasn’t been bought and paid for by special interests and won’t be accepting any corporate contributions in this campaign. Instead our campaign will be powered by the people.”

The Siena College poll found that registered voters in New York state prefer Cuomo over Dutchess County Executive Marc Molinaro by 57 percent to 29 percent. They also favor Cuomo over state Sen. John DeFrancisco, of Syracuse, 57 percent to 28 percent, according to the poll.

Democrats overwhelmingly favor Cuomo over Nixon, a potential primary challenger, by 66 percent to 19 percent.

Cynthia Nixon (credit: Mario Tama/Getty Images)

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Nixon, a 51-year-old gay liberal activist, is a supporter of New York City Mayor Bill de Blasio, a fellow Democrat who often clashes with Cuomo on a variety of issues.

According to Siena pollster Steven Greenberg, Nixon “is far from a household name in New York, though she is better known than either Molinaro or DeFrancisco.”

Molinaro plans to formally kick off his campaign April 2, several weeks after he began getting the support of local GOP leaders upon telling them he was running. Republicans are expected to select a candidate at their state convention in May.

Cuomo’s favorability rating slipped slightly from the previous month, with 52 percent of voters saying they had a favorable view of the governor compared to 40 percent who were unfavorable. A February Siena poll had Cuomo’s favorability rating at 53 percent, down from 62 percent the previous month.

The poll of 772 registered voters was conducted March 11-16. The poll has a margin of error of 4 percentage points.

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