** FILE ** Senate candidate Rand Paul, Kentucky Republican, arrives at his campaign headquarters in Bowling Green, Ky., on Wednesday, May 19, 2010, the day after winning his party's nomination. (AP Photo)

** FILE ** Senate candidate Rand Paul, Kentucky Republican, arrives at his campaign headquarters in Bowling Green, Ky., on Wednesday, May 19, 2010, the day after winning his party's nomination. (AP Photo)