Here’s Tannenhaus’s full article at the New Republic: Original Sin - Why the GOP is and will continue to be the party of white people.

“Who needs Manhattan when we can get the electoral votes of eleven Southern states?” Kevin Phillips, the prophet of “the emerging Republican majority,” asked in 1968, when he was piecing together Richard Nixon’s electoral map. The eleven states, he meant, of the Old Confederacy. “Put those together with the Farm Belt and the Rocky Mountains, and we don’t need the big cities. We don’t even want them. Sure, Hubert [Humphrey] will carry Riverside Drive in November. La-de-dah. What will he do in Oklahoma?”

Forty-five years later, the GOP safely has Oklahoma, and Dixie, too. But Phillips’s Sunbelt strategy was built for a different time, and a different America. Many have noted Mitt Romney’s failure to collect a single vote in 91 precincts in New York City and 59 precincts in Philadelphia. More telling is his defeat in eleven more of the nation’s 15 largest cities. Not just Chicago and Columbus, but also Indianapolis, San Diego, Houston, even Dallas—this last a reason the GOP fears that, within a generation Texas will become a swing state. Remove Texas from the vast, lightly populated Republican expanse west of the Mississippi, and the remaining 13 states yield fewer electoral votes than the West Coast triad of California, Oregon, and Washington. If those trends continue, the GOP could find itself unable to count on a single state that has as many as 20 electoral votes.