Mr. West's popularity among conservatives goes far beyond South Florida. He was chosen to give the keynote speech in February at the Conservative Political Action Conference, and is frequently featured on the Fox News Channel and in other conservative settings where he enjoys explaining, reiterating or unleashing any number of incendiary remarks concerning what he often calls "the other side."

There was his recent observation that liberal women "have been neutering American men," and that the president of the United States is a "low-level socialist agitator."

Mr. West scoffs at the notion that he has become a sensation. "I don't drink my own tub water or read my own press," he said in a brief interview before a town hall-style meeting here this week. "I tell the truth and I stand on convictions and you know what you're getting."

While Mr. West's decision to cast himself as an iconoclast has made him a conservative star, it is unclear how well it will serve him as he seeks re-election next year in this swing district, where far more voters are likely to come out for a presidential election than in the midterm cycle.