I've been reading Balloon Juice for years now, and I've always wondered what it was that made John Cole change from being a staunch Republican to a vehement anti-Republican. Thanks to this fine interview of John by E.D. Kain, I now know.
[Added] And, having read to the end, I see E.D. did another interview with another prominent blogger, also well-known for his fairly recent disillusion with Real Conservatism™: Charles Johnson of Little Green Footballs.