I got this information from
http://en.wikipedia.org/wiki/Rand_Paul:
Randal Howard "Rand" Paul (born January 7, 1963) is an American ophthalmologist and political activist who describes himself as a "constitutional conservative". Rand Paul is the chairman and founder of Kentucky Taxpayers United. He is also the son of Republican Congressman Ron Paul of Texas.
In August 2009, Paul officially announced his candidacy for the United States Senate seat currently held by retiring Senator Jim Bunning of Kentucky. Paul, a Republican, won the party's primary election on May 18, 2010. He will face Kentucky Attorney General Jack Conway in the general election on November 2, 2010.