Wealthy Democratic political gadfly Connie Milstein, who calls herself "an ordinary Park Avenue matron," will now have to change her tune. Sources tells us the heiress to the Milstein real-estate fortune has just gone to contract to buy a Fifth Avenue duplex apartment with a $15.7 million asking price. Milstein made a name for herself in 2000 during the Bush-Gore election when she was caught on camera bribing homeless potential voters with cigarettes in exchange for a vote for Gore. She was eventually fined $5,000 for her spirited activism. Unlike the homeless, Ms. Milstein has signed on to take a...