The bigger concern for Cruz is former Dallas Mayor Tom Leppert,who could turn his attention to the former solicitor general as the two battle for a spot in a runoff opposite the frontrunning Dewhurst. Leppert, like Dewhurst, has already demonstrated his willingness to fuel his campaign with his personal wealth and run TV ads. Leppert's campaign has telegraphed a main point of comparison between himself and Cruz, frequently touting the former mayor's business acumen and saying that he is not an attorney or a career politician. Meanwhile, Addison also isn't going away. The Dewhurst campaign has argued for his inclusion in the candidate debates, which would conveniently allow another candidate to go after Cruz. The coming attacks once again emphasize the biggest challenge for Cruz's campaign: finding enough money to eventually make its case through statewide television ads. Cruz's fundraising has been solid, and he has the support of outside groups like the Club for Growth and Sen. Jim DeMint's Senate Conservatives Fund PAC. But it remains to be seen whether that will be enough to contend with the deep pockets of Dewhurst and Leppert, neither of whom will have any problem waging an air war. Cruz will have to respond in turn with a series of TV ads that knock Dewhurst as a moderate, tout Cruz's conservative bona fides and, potentially, defend Cruz against attacks from Leppert.