In politics, the surest path to irrelevance and powerlessness is to be taken for granted by one party and written off by another. That's the road Latinos are on, thanks to major blunders by the Republicans campaigning for president. In June, all but California's Duncan Hunter blew off an invitation to address the National Association of Latino Elected and Appointed Officials. In September, a debate on Spanish-language television had to be postponed after all but Arizona Sen. John McCain refused to commit. After taking criticism for the snub, Rudy Giuliani, Fred Thompson and Mitt Romney have committed to taking part...