In the Senate, many top-tier senators work together very closely. Now that the Democratic primaries are over, the big-name Democrats are working together again. These include Reid, Feingold, Biden, Kennedy, Leahy, Byrd, Dodd, Harkin, Bayh, Boxer, Durbin, Kerry, Schumer, and of course, Obama and Clinton. They’ve talked, and so far, Dodd, Feingold, and Boxer are leading the filibuster effort. Obama isn’t in the position to lead anything controversial right now, nor is Clinton. For this one, the fight is up to their colleagues.