Oklahoma returns to a two-party state - Article Photos 1/1

File photo - Former Oklahoma Gov. and U.S. Sen. David Boren talks about the Americans Elect signatures to be given to the election board at the state Capitol, Tuesday, Feb. 28, 2012. Boren is supporting an effort to have a bipartisan presidential ticket on the November ballot in all 50 states, saying the country's two- party political system is in need of "shock therapy" to cut through hyper-partisan rhetoric. (AP Photo/The Oklahoman, Sarah Phipps)