Three states are gearing up to give Democrats three very big clues about the state of politics and what voters are thinking. There are off-year races unfolding right now in New Jersey, Virginia, and California. Money is pouring in, ads are going up, and for a sense of the stakes, look no further than the explosive debate between the two people vying to become the next governor of New Jersey.A race one local reporter describes as getting more bitter by the day. My opponent on Friday went down to Washington, ...