The NRCC has added former Arizona state Sen. Jonathan Paton to its Young Guns program.

Paton, who is challenging Rep. Gabrielle Giffords (D-Ariz.), has joined the first of three stages of the program -- on the radar.

"Jonathan is an accomplished, independent leader who will fight to put Arizonans back to work," NRCC Chairman Pete Sessions (Texas) said in a statement.

Paton is the second candidate in the primary who has made joined the program. Iraq veteran Jesse Kelly is also at the on-the-radar stage.