Former Arizona Republican Rep. J.D. Hayworth, left, talks with Arizona Secretary of State Ken Bennett, right, as he hands over the necessary signatures to get his name on the Aug. 24 primary election ballot to challenge incumbent Sen. John McCain, Monday, April, 26, 2010, in Phoenix. Second from left is Mary Hayworth, J.D. Hayworth's wife, and second from the right is Amy Bjelland, State Election Services Director. (AP Photo/Ross D. Franklin)
Former congressman J.D. Hayworth will speak to a Republican club in Scottsdale on Thursday.
Hayworth is challenging Arizona Sen. John McCain in the Republican primary for the U.S. Senate.
Hayworth will speak to the Legislative District 8 Republicans at the Mustang Library in Scottsdale on Thursday evening.