House Speaker Shannon announces candidacy for open U.S. Senate seat - Article Photos 1/1

Oklahoma House Speaker T.W. Shannon announces a run for the U.S. Senate during a news conference at the Tulsa Historical Society Wednesday. Shannon, R-Lawton, is seeking the Senate seat held by U.S. Sen. Tom Coburn, who is stepping down two years early at the end of this congressional term. (AP Photo/Tulsa World, Mike Simons)