Who's running and who could run in 2016?

POSTED: 8:41 AM Nov 08 2012   UPDATED: 8:34 AM May 27 2015

Rick Santorum announced his candidacy for the 2016 presidential election on Wednesday. Check out other formally announced or potential 2016 candidates.

SC Sen. Lindsey Graham
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Sen. Lindsey Graham carried the night at the South Carolina GOP's annual Silver Elephant Dinner in Columbia on May 1, dropping serious hints about his potential White House bid.

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