State Sen. Neil Riser (left) and Vance McAllister are pictured in images provided by their campaigns. The two Republicans are running against each other in a Louisiana congressional special election. AP hide caption

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Democrat Al Franken, with his wife, Frannie, meets reporters and a small gathering of supporters at their house in Minneapolis on June 30, 2009, after the Minnesota Supreme Court ruled in favor of the Democrat in the Senate race against Republican Norm Coleman. Andy King/AP hide caption

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State Sen. Mark Obenshain speaks at the Virginia Republican convention in Richmond on May 18. He currently holds a 17-vote lead over Democratic state Sen. Mark Herring in the state's attorney general election. Steve Helber/AP hide caption

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The vice president, who was on the presidential campaign trail last year in Florida, spent Tuesday calling winning candidates across the country. Matt Rourke/AP hide caption

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