warren. the massachusetts democrat was absent from hillary's rally in boston yesterday where clinton received the endorsement of the city's mayor wally walsh. >> in 2016, it's time we stopped talking about having a woman as president. it's time we make it a reality. get your sledge hammers ready. we've got a glass ceiling to demolish. i'm proud to introduce my friend and yours, a champion for america and the next president of the united states of america, hillary clinton! >> that's pure boston. laura bass for the huffington post and bob cusack.