Thanks to the current nomination calendar, U.S. presidential candidates (like Chris Christie, pictured at the 2015 Iowa State Fair) get lots of practice at flipping pork chops.
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A supporter waves a Cuban flag in front of the country's embassy after it reopened for the first time in 54 years on July 20 in Washington, D.C. The embassy was closed in 1961 when U.S. President Dwight Eisenhower severed diplomatic ties with the island nation after Fidel Castro took power in a communist revolution.
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Former Florida Gov. Jeb Bush had a tough week with his changing positions on the Iraq War and trying to explain whether he would have authorized it, knowing what we know now.
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Former President Bill Clinton campaigns before the 2014 elections for former Sen. Mark Pryor, center, and Mike Ross, right, the Democratic candidate for governor.
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When Mike Huckabee was governor of Arkansas, he tied a yellow ribbon around a bust of President Clinton at the Governor's Mansion. He said he would remove the ribbon when the federal government allows ARKids First to continue enrolling Medicaid-eligible applicants into the program.
Former Arkansas Gov. Mike Huckabee was a Republican presidential hopeful in the 2008 election. He writes that he wants his book God, Guns, Grits, and Gravy to introduce Americans to life in "flyover country."
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Sen. Bill Frist (left) gives a mock smallpox vaccine during a training session in 2003. Frist, a surgeon, once gave CPR to a visitor who collapsed in a Senate office building.