Sen. Claire McCaskill, D-MO, is photographed in her office on Capitol Hill in Washington, D.C., February 16, 2012. (Olivier Douliery/Abaca Press/MCT)
Sen. Claire McCaskill, D-MO, is photographed in her office on Capitol Hill in Washington, D.C., February 16, 2012. (Olivier Douliery/Abaca Press/MCT) MCT
Sen. Claire McCaskill, D-MO, is photographed in her office on Capitol Hill in Washington, D.C., February 16, 2012. (Olivier Douliery/Abaca Press/MCT) MCT

GOP ahead of Democrats in outside spending for key Senate races

April 20, 2012 12:00 AM