In an interview with the Buffalo News, after flip-flopping on marriage, NY Sen. Mark Grisanti refuses to rule out running as a Democrat (again reversing himself). Does ambition have no limits?

Three days after his historic vote to legalize same-sex marriage in New York, State Sen. Mark J. Grisanti defended his action on the home front Monday while absorbing a series of political body blows from furious Republican and Conservative leaders.

The Buffalo Republican, whose underdog victory last November swung control of the Senate to the GOP, also would not rule out running as a Democrat when he faces the voters again in 2012, backing off on a blanket rejection of such a move that he made after the Friday vote.