Sen. Orrin G. Hatch of Utah has been put through a bruising campaign by Dan Liljenquist, a former state senator challenging the six-term incumbent in the state's Republican primary. Polls show Mr. Hatch still enjoying a sizable lead. (Deseret News via Associated Press)

Sen. Orrin G. Hatch of Utah has been put through a bruising campaign by Dan Liljenquist, a former state senator challenging the six-term incumbent in the state's Republican primary. Polls show Mr. Hatch still enjoying a sizable lead. (Deseret News via Associated Press)