Republicans voting for a bill containing a large tax increase on the rich, even with the metaphorical gun to their heads, would mark a sea-change in Washington, and possibly cause a major intraparty rift.
But rumors of a comeback have intensified since the UMP's confused attempt to elect a successor last November, in which both candidates Francois Fillon and Jean-Francois Cope claimed victory amid intraparty squabbling and allegations of vote-rigging.