The conservative talk-show community? Don't mind them -- they're irrelevant. This message from John McCain surrogates and other members of the political class is filling the airwaves and op-ed pages. In the Wall Street Journal, Weekly Standard Executive Editor Fred Barnes recently wrote that McCain needn't worry that conservatives are uncomfortable with his candidacy, because "while they love to grumble and grouse, conservatives tend to be loyal Republicans who wind up voting for their party's candidate." In the same pages, novelist Mark Helprin, a former adviser to Robert J. Dole's presidential campaign, savaged conservatives such as Rush Limbaugh, Sean Hannity...