There will be those Democrats who bid good riddance to Bayh and his coal-burning-state apostasy about cap and trade, etc. If so, they won’t need a very big tent to contain the celebration. On a more pragmatic view, Bayh’s dramatic vote of no-confidence in his own party’s leadership looks like another Massachusetts-sized political earthquake for the Democrats. Not only does it imperil the president’s short-term hopes of passing health care and other major legislation this year. It also makes it much more likely that the Republicans can pick up Bayh’s Senate seat in normally red Indiana and, with it, control of the Senate itself. If present trends continue, November could turn into a Republican rout.