After a narrator describes Ernst as a "mom, farm girl and a lieutenant colonel who carries more than just lipstick in her purse," the ad shows the candidate loading a pistol and firing shots at a target that is presumably a metaphorical stand-in for Obamacare.
"Oh, and one more thing," the narrator says after Ernst's shots cleanly hit the target. "Joni doesn't miss much."
Ernst's campaign generated attention with a March ad vowing to make big spenders "squeal" in Washington.
Her chief competition in Iowa's June 3 GOP primary is Mark Jacobs, a former CEO of Reliant Energy, which is based in Texas.