“Man of the People” Alec Baldwin, after railing against New York Senate Majority Leader Dean Skelos on Twitter in support of a millionaires’ tax, shelled out $75,000 during an auction at Elton John’s AIDS Foundation event at Cipriani Wall Street on Wednesday. The actor bid to get his girlfriend’s portrait shot by Greg Gorman, engaging in a bidding war until the other party dropped out at $20,000. “The auctioneer realized Alec would pay anything for the portrait, and gave it to both of them for $20K each,” a spy said. Baldwin, a Capital One pitch-man, then bid on five nights atDonna Karan’s villa on Parrot Cay, winning it for $55,000 and hugging girlfriend Hilaria Thomas after he won. His money went to a good cause, the benefit raised $2 million for the foundation, which cares for people living with HIV/AIDS. Others at the bash, treated to a Smokey Robinsonperformance, included M.A.C.’s John Demsey, Revlon CEO Alan EnnisSarah FergusonT amara MellonSandra Lee and Gov. Andrew Cuomo, who John thanked for “taking a stand in New York and making the dream of marriage equality a reality in the state.” [Page Six]