I've always voted for Democrats, but like you, I've grown distrustful of the current direction of the party. I'll never be a Republican (the religious fundamentalists are anathema to me), but as your blog continually asks, I wonder/hope if there can't be a third way in American politics? Not a Bill Clinton "Third Way," but a true, grass roots, independent third party that combines some of the old-school conservatism of what used to be the GOP (fiscal sanity, foreign policy realism etc.) with the best of the Democratic party (inclusiveness, domestic competence, worker's rights etc.). Or more simply: Fiscally conservative, socially liberal.
My dream too. And my book is an attempt to make the case more systematically than a blog can.
Once again, this will not happen (for my many posts explaining why, click here). It's a dream and nothing more. However, the threat of a third party, or of disenchanted moderates switching parties, can move the two major parties around. That's Sullivan's best hope.