Dem lawmaker vows to wear sweater-vest if Santorum wins in Iowa

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Santorum's sweater-vests have become a personal sartorial signature on the campaign trail. The former Pennsylvania senator recently said his campaign supporters have responded positively to the sweaters.

"It sort of took on a life of its own," Santorum told The New York Times. "So I started wearing more and more. My staff bought me a bunch more."