Steven Prescott is an ardent auto racing fan. He's a conservative Republican and a lifelong resident of rural areas. This weekend, the 36-year-old father of two plans to be in the stands to watch Nextel Cup stock car racing at the New Hampshire International Speedway in Loudon, N.H. He is exactly the type of person President Bush hopes to rally during a campaign stop at Sunday's race, the largest sporting event in New England, with more than 100,000 fans expected to attend. Prescott, who lives in Manchester, epitomizes the so-called "NASCAR dad" - the demographic buzzword given to voters who...