A Prominent Republican is joining a prominent Democrat in predicting that Gov. Cuomo will become President Obama's running mate for vice president next year. Former New York GOP boss William Powers, credited with playing a key role in electing Rudy Giuliani mayor and George Pataki governor, was effusive in his praise of Cuomo's successes in the just-ended legislative session, and in his prediction of the freshman governor's political future. "Andrew had a fabulous session. It was fabulous. A property-tax cap, ethics reform and, for Democrats, gay marriage," said Powers.