The GOP isn't doomed. The GOP "leadership" is doomed. The Roves, the Kristols and Krauthammers, the bottom-dwelling Ginsbergs, and the moderate McCains and Romneys.
There are two kinds of Americans: Workers, and Talkers. The Workers work, the Talkers talk. Sure, we hear more liberal ideology on TV news, but why? Because Workers work, and Talkers talk.
Workers tend to lean right, and vote Republican. But when the GOP elites run a McCain or Romney, they're trying to sneak a Talker in on a Worker ballot. And Workers don't buy it, and won't vote for it, no matter how much Talkers talk.