Welcome back to Politics Nation. We've been covering the race for mayor here in New York City, which of course has huge national implications. Tonight, we're joined by the former governor of New York State, now an independent candidate for mayor, Andrew Cuomo. Governor Cuomo, thanks for joining us tonight. Governor, I have to start tonight with the topic of political violence. We've seen the tragic events unfold this week in Utah. In July, a gunman killed four people and himself at a Park Avenue office buil ...