Mr. Santorum’s NeighborhoodCall it the "Mr. Rogers Effect" if you want, but many are crediting Rick Santorum’s surprising second-place finish in the Iowa caucuses to his heart-felt conservatism, relentless campaigning and, yes, his wide array of sleeveless V-neck sweater vests. The vests are a sensible choice for dads taking kids to soccer practice and, as it turns out, the perfect attire for charming Iowa voters. "It sort of took on a life of its own," Santorum has said. "So I started wearing more and more. My staff bought me a bunch more."