The Associated Press
Associated Press
U.S. Sen Claire McCaskill, D-Mo., applauds as she checks in with election officials before voting at Kirkwood Community Center Tuesday, Nov. 6, 2012, in Kirkwood, Mo. McCaskill is running for reelection against Republican challenger Rep. Todd Akin, R-Mo. (AP Photo/Jeff Roberson)

Missouri Sen. Claire McCaskill, a Democrat once thought to be one of the Senate's most vulnerable incumbents, held on to her seat in Tuesday's election as GOP challenger Todd Akin continued to face criticism for saying in August that women had ways of preventing pregnancies in the case of "legitimate rape."

GOP leaders, including Republican nominee Mitt Romney, called on him to abandon the race. Akin stayed in and hoped support from evangelicals would lift his prospects.