LINCOLN, Neb. – Four Independent candidates joined the Republican and Democratic nominees for the U.S. Senate debate Monday at the Nebraska State Fair, but the focus was on the two party favorites as a top trial lawyer tried to take a rising Republican star down a few notches.

Democrat Dave Domina took several swipes at Republican Ben Sasse, accusing him of cavorting with extremists and boxing himself into a corner by signing a pledge not to increase taxes.

“We can’t risk a mistake with on-the-job training in this election,” Domina said.