"Don Stenberg's a conservative leader who's won battles for smaller government, spending cuts, the death penalty, term limits," says the speaker in the ad. "These days, sending someone to Washington who just talked a good game doesn't cut it. Don Stenberg is the real deal."

The ad takes an implicit swipe at front-running Republican Jon Bruning, the state attorney general, whom Stenberg is challenging from the right. The Club for Growth, a fiscally conservative group, announced their support for Stenberg on Tuesday.

Watch the ad: