The overnight news of Dominique Strauss-Kahn’s resignation sets up a global battle over who will succeed him in the IMF’s glass-and-steel headquarters in Washington. But, of course, that’s not the only fight in town.

The bipartisan group of budget negotiators now known as the Gang-of-Six-Minus-One is expected to meet today to try to salvage hopes of a budget compromise after a shouting match over Medicare sent Republican Senator Tom Coburn to the exit door.

Medicare is the third-rail political issue that recently had Republicans showing signs of retreating from House Budget Chief Paul Ryan’s Republican reform plan. Critics call it a blueprint for privatizing the federal government’s healthcare program for the elderly.

But all politics is local. And the national Medicare litmus test is likely to take place far from Washington.

A proxy war over Medicare-as-2012-campaign-issue is shaping up around next week’s special congressional election in one of New York’s most conservative districts, where the Ryan plan has given Democrats the chance for an upset.  Conservative groups are pouring tons of money into the contest and veteran Capitol Hill staffers are expected to parachute in soon to help get out the vote.