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U.S. Presidential hopeful Sen. John Edwards (D-NC) and his wife, Elizabeth, visit core supporters and volunteers in Union County  on January 02, 2008, in Creston, Iowa, during his 36-hour-long campaign visit lasting January 1-January 2 across Iowa with the Edwards family in the lead-up to the January 3 caucus. (Photo by: Yana Paskova for The New York Times)..