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FILE - Minnesotans United for All Families who oppose the gay marriage amendment watch a video feed of a " What If?" scenario on the presidential race at an election night party Nov. 6, 2012 in St. Paul, Minn. (AP Photo/Jim Mone, File)

FILE - Minnesotans United for All Families who oppose the gay marriage amendment watch a video feed of a " What If?" scenario on the presidential race at an election night party Nov. 6, 2012 in St. Paul, Minn. (AP Photo/Jim Mone, File)

FILE - U.S. President Harry Truman and his wife, Bess, arrive in Philadelphia, aboard the special presidential train "Magellan" during his 30-state whistle-stop campaign tour on Oct. 6, 1948. (AP Photo, File)

FILE - U.S. President Harry Truman and his wife, Bess, arrive in Philadelphia, aboard the special presidential train "Magellan" during his 30-state whistle-stop campaign tour on Oct. 6, 1948. (AP Photo, File)

FILE - Nate Silver sits on the stairs at Allegro hotel in downtown Chicago, Friday, Nov. 9, 2012. (AP Photo/Nam Y. Huh, File)

FILE - Nate Silver sits on the stairs at Allegro hotel in downtown Chicago, Friday, Nov. 9, 2012. (AP Photo/Nam Y. Huh, File)

FILE - In this Nov. 4, 1948, file photo, President Harry S. Truman at St. Louis' Union Station holds up an election day edition of the Chicago Daily Tribune, which - based on early results - mistakenly announced "Dewey Defeats Truman." (AP Photo/Byron Rollins, File)

FILE - In this Nov. 4, 1948, file photo, President Harry S. Truman at St. Louis' Union Station holds up an election day edition of the Chicago Daily Tribune, which - based on early results - mistakenly announced "Dewey Defeats Truman." (AP Photo/Byron Rollins, File)