Dave Wilson chuckles as he talks about his unorthodox political campaign. "I'd always said it was a long shot," Wilson says. "No, I didn't expect to win." Still, he figured he'd have fun running, because he was fed up with what he called "all the shenanigans" at the Houston Community College System. As a conservative white Republican running in a district whose voters are overwhelmingly black Democrats, the odds seemed overwhelmingly against him. Then he came up with an idea, an advertising strategy that his opponent found "disgusting." If a white guy didn't have a chance in a mostly African-American...