HAMMERING IT HOME: New Brown ad attacks Warren over “you didn’t build it” argument. “Fear not, Reaganauts, Ronald Reagan gets some quality time in the ad, too. It’s the use of traditional Democrats that’s most effective, though, and one suspects the claiming of the Kennedy mantle that will most sting Warren and the Democrats in Massachusetts. The ad reminds voters that this isn’t their fathers’ Democratic Party any longer — a point Joe Lieberman made last week — and that Warren and Obama represent extremes on the Left that remain very much disconnected with mainstream American attitudes about enterprise and the role of government.”