I have worked for Hillary Clinton, Richard Blumenthal, Chris Murphy, and Luke Bronin. Like Clinton, Luke is a nerd; his perfect day probably involves reading under a tree. Like Blumenthal, he simply doesn’t stop moving. Like Murphy, his ambitions always involve other peoples’ lives improving. But he’s also the strangest of the bunch to work for. He doesn’t flinch about doing something unpopular once he has concluded it’s the right thing to do, p…