…or maybe it's just the owners of NASCAR. From Politics:
Voters should not expect to see either John McCain or Barack Obama making appearances at NASCAR events in Daytona Beach Florida, or a dozen other speedways across the country before Election Day. According to officials from the International Speedway Corporation (ISC), which owns the Daytona International Speedway, as well as major facilities in both candidates' home states of Arizona and Illinois, the company is implementing a firm policy that prohibits political candidates from campaigning in any capacity at their racing events.
Politics was informed of the policy after a credentialing request had been denied to cover an unofficial appearance in Daytona by Libertarian Party presidential nominee, Bob Barr. ISC officials explained that credentialing a political reporter would, in their view, constitute the facilitation of a campaign event, in sharp violation of their policy.
The officials declined to provide details of the policy, and offered only a vague explanation of when the policy had gone into effect. But they expressed a belief that fans attending events at their speedways are sensitive to what might be construed as intrusive political activity.
Needless to say, that policy wasn't in place earlier this year when motoring enthusiast Rudy Giuliani campaigned at the Daytona Speedway. More here.
So fans attending events might not want to be burdened by politicians showing up (and who can blame them?), but it's worth remembering that NASCAR and racetrack owners (and others involved in stadiums, arenas, and what-have-you) are never shy about getting public subsidies for their venues. Even when the venue is a NASCAR museum.