Former Texas Solicitor General Ted Cruz, center, is surrounded by supporters and media at a voting precinct Tuesday, July 31, 2012, in Houston. Cruz faces Lt. Gov. David Dewhurst in the

 

              Former Texas Solicitor General Ted Cruz, center, is surrounded by supporters and media at a voting precinct Tuesday, July 31, 2012, in Houston. Cruz faces Lt. Gov. David Dewhurst in the
Former Texas Solicitor General Ted Cruz, center, is surrounded by supporters and media at a voting precinct Tuesday, July 31, 2012, in Houston. Cruz faces Lt. Gov. David Dewhurst in the Republican primary runoff election for the Republican nomination for the U.S. Senate. (AP Photo/Pat Sullivan)