FILE - In this March 21, 2015 file photo, Sen. Rand Paul, Kentucky Republican, participates in a meet and greet at the Epoch Restaurant in Exeter, N.H. Few states have shaped presidential politics like Iowa, New Hampshire and South Carolina. By hosting the nation's first presidential primary contests, the states have reaped political and financial rewards for decades on successful candidates and hastened the end for underachievers. Yet their clout may be declining in 2016. (AP Photo/Cheryl Senter, File)
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