Actually, a huge percentage of hosting services run Linux. This is probably because the Linux systems are more reliable. It's not a Democrat philosophy, but simple fact if you want something hosted reliably and well. Here are the top 10 most reliable hosting services:
Half are Linux, all but three are open source, all are UNIX. The funny part is the only services on this list who are running a proprietary OS (Solaris) are owned by those foreigners you hate so much.
BTW, want to see what Kerry actually himself uses?
The official Republican sites RNC.ORG and GOP.COM both use Windows. And no, I don't care what Kerry uses in his office nor do I care to see a picture of him, ever.