In Walker Recall, Road to White House Runs Through Wisconsin

National Republicans think that if Wisconsin Gov. Scott Walker survives his recall election Tuesday, it will be much harder for Mr. Obama to keep the state in the Democratic column in the November election.

If Mr. Obama loses Wisconsin, the GOP says, it changes the entire Electoral College map — and the Democratic incumbent could pretty much kiss a second term goodbye.

The Wisconsin theory is one of many being bandied about now that the general election between Mr. Obama and Mitt Romney, the presumptive Republican nominee, is under way.

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