TOPEKA, Kan. (AP) — Tea party challenger Milton Wolf is proposing six debates with U.S. Sen. Pat Roberts between now and the Aug. 5 Republican primary in Kansas.

The Topeka Capital-Journal reports Wolf issued his challenge to the three-term incumbent on Monday. Wolf, a Leawood radiologist, wants two debates each in the Topeka, Wichita and Kansas City-area media markets.

Roberts spokesman Leroy Towns said the senator has no problems with candidate forums or joint appearances.

But Towns also said they should include the other two Republican candidates on the ballot: former mail carrier Alvin Zahnter, of Russell, and homemaker D.J. Smith, of Osawatomie.

The Democrats seeking to replace Roberts are Shawnee County District Attorney Chad Taylor and Lawrence attorney Patrick Wiesner.

Businessman Greg Orman, of Olathe, is running for Senate as an independent.