Texas Lt. Gov. David Dewhurst is backed by supporters outside a Houston deli as he answers reporters questions Tuesday, July 31, 2012. Dewhurst faces former Texas Solicitor General Ted

 

              Texas Lt. Gov. David Dewhurst is backed by supporters outside a Houston deli as he answers reporters questions Tuesday, July 31, 2012. Dewhurst faces former Texas Solicitor General Ted
Texas Lt. Gov. David Dewhurst is backed by supporters outside a Houston deli as he answers reporters questions Tuesday, July 31, 2012. Dewhurst faces former Texas Solicitor General Ted Cruz in the Republican primary runoff election for U.S. Senator. (AP Photo/Pat Sullivan)