A Summit Consulting Group poll in Arizona finds Joe Arpaio (R), who calls himself "America's Toughest Sheriff," to be the leading Republican candidate to replace Sen. Jon Kyl (R-AZ).
Arpaio leads with 21%, followed by Rep. Jeff Flake (R-AZ) at 17%, former Rep. J.D. Hayworth at 17% percent, former Rep. John Shadegg at 12% and Rep. Ben Quayle (R-AZ) at 6%.
Huge caveat: The poll was conducted by a company that is raising money for Arpaio's re-election campaign.