Capital Tonight:

As Sen. Mark Grisanti publicly mulls whether to switch parties, Democrats in his Buffalo district are already jockeying to unseat the first-term lawmaker.

Mike Amodeo, a Democratic trial lawyer from Hamburg says he’s gearing up to run next year. He hasn’t formed a committee yet, but he’s starting to recruit campaign staff and has been in touch with the Senate Democratic Campaign Committee.

... He criticized Grisanti, a former Democrat turned Republican, for what he says is flip-flopping by casting “politically advantageous” for same-sex marriage and UB2020, though quickly added he would have voted yes on those measures.