Shane Osborn (left) has won the support of Concerned Women for America in his bid for Senate in the Nebraska Republican primary. One of his opponents, Ben Sasse (right), a former Bush administration health official, has been called "the clear cut conservative choice" by former Alaska Gov. Sarah Palin. (Associated Press photographs)

Photo by: Nati Harnik

Shane Osborn (left) has won the support of Concerned Women for America in his bid for Senate in the Nebraska Republican primary. One of his opponents, Ben Sasse (right), a former Bush administration health official, has been called "the clear cut conservative choice" by former Alaska Gov. Sarah Palin. (Associated Press photographs)