John Liu thought he was on track to be New York City's next mayor in 2013 before a federal investigation overshadowed his run. Now, he says, things have changed and he's trying to get back in the game as one of a group of Democrats running primaries against the former so-called "Independent Democrats" who've helped Republicans keep control of the state Senate.

John Liu thought he was on track to be New York City's next mayor in 2013 before a federal investigation overshadowed his run. Now, he says, things have changed and he's trying to get back in the game as one of a group of Democrats running primaries against the former so-called "Independent Democrats" who've helped Republicans keep control of the state Senate.