His early ads betray a sense of vulnerabilityIt is barely August and already the ad war for the U.S. Senate campaign has begun. The election isn't until November. Wait. I just checked my calendar. That's November 2006. Holy cow. A full 15 months before the election, the eight-term senator feels compelled to run ads to offset last week's ads by the National Republican Senatorial Committee. The eyes of television sales managers across the state just lit up. Anyone want to help me open a Maserati dealership? Not since Jay Rockefeller spent $12 million to get to the Senate 21 years...