As discussed earlier, Barack Obama has a new radio ad slamming John McCain and Rick Davis for their alleged role in the potential loss of 8,000 jobs in southwest Ohio. The ad excerpts a portion of McCain’s town hall exchange with the wife of one of the affected employees, Mary Houghtaling of Wilmington, Ohio. Yesterday evening, Houghtaling participated in a conference call with reporters, during which she asked Obama to stop misleading, and stop running the ad.