Forget Florida. And Ohio. And Pennsylvania. The next President of the United States may well be elected in Michigan. In 2000, Al Gore carried the Wolverine State by more than 200,000 votes. This year's conventional wisdom has conceded it to John Kerry. Two weeks ago, Democratic operatives began telling reporters that Michigan was in the bag. They were wrong. Last Thursday, a poll in the Detroit News put President Bush ahead in Michigan by 4 points. A Knight-Ridder survey showed the race is a virtual tie. This came as a shock to the Kerry camp, which has concentrated its efforts...