If you've got to have a gimmick in politics, Senator Bob Graham may have found the next big thing. Mr. Graham, one of a slew of Democrats running for president this year, has spent as much as $500,000 to help underwrite a souped-up Jack Roush pickup truck that has been screaming around some of Nascar's racetracks. After the Bob Graham Ford won a race in Kansas City, his campaign got thousands of dollars in free publicity as TV cameras followed the machine for a full victory lap. Politicians nowadays are setting their sights on "Nascar dads," as opposed to the...