 A scheduled debate between Virginia Senator Tim Kaine and his Republican challenger Hung Kau has been canceled. It was supposed to happen July 20th during the Virginia Bar Association's summer meeting. The VBA says it was unable to obtain commitment from the Kau campaign. Kaine has accepted two other debates, but Kau has not yet. The first, September 19th, would be hosted by Northern Virginia Chamber of Commerce and the second on October 2nd at Norfolk State University.