U.S. Senate candidate Tom Leppert is calling out his GOP rivals–and Pres. Obama–in the campaign’s fourth TV ad. He calls Lt. Gov. Dewhurst a "career politician backed by lobbyists" and Former Solicitor General Ted Cruz a "government lawyer." Leppert is banking on his business background and his executive experience as mayor of Dallas to set him apart from the competition.

"I’m a conservative businessman. I’ve created good jobs, balanced budgets, and cut wasteful spending in business and government," Leppert says in the ad.

It started airing statewide on cable and on broadcast networks in most of the major markets Monday.