Demography, as the saying goes, may be destiny. But an archaic system of representation that includes a winner-take-all selection of electors and eschews proportionate representation at the local level is denying a voice to political minorities. Are you perchance one of the 2.4 million hardy Democrats living in Texas? You might as well hang up your political spurs. Since the Reagan era, Texas has become solidly Republican. Or perhaps you're a GOPer in New York or California, home to a combined 8.5 million members of the Grand Old Party. Tough luck, pal. Many of the distortions can be traced to...