Associated Press
FILE - In this July 19, 2012 file photo, Vice President Joe Biden campaigns at the Plumbers & Pipefitters Local Union 189 in Columbus, Ohio. In May, after Joe Biden tripped up his boss by voicing support for same-sex marriage while the president remained on the fence, there was speculation about whether the remarks were spontaneous or deliberate. But to those who know Biden, there was no doubt. He was just speaking his mind. (AP Photo/Jay LaPrete, File)

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