It's an interesting ad. Hopefully it will sway a few votes to Chuck Purgason (R-MO) on August 3rd. Purgason is the leading challenger to Roy Blunt (R-MO) in the GOP primary for US Senate. The fascinating thing about the ad is the last line: "Paid for by Joe the Plumber and friends." I took that as a rebuttal of Tony Messenger (of the Post Dispatch) who suggested that Purgason was paying Joe the Plumber for the endorsement.