Robert Bluey at Human Events has an interesting post about the Michigan State Republican Party. He points to a fascinating article in the Weekly Standard. Anyone who wants to understand the inner workings of the state party needs to read this article. It reviews a lot of interesting history.
Apparently, there is maneuvering going on behind the scenes as to who the 2008 Presidential nominee will be. One faction supports John McCain and the other supports Mitt Romney. Romney is viewed as the more conservative candidate. Hence, his supporters want have a closed primary. This would prevent Democrats and independents from helping to pick the Republican nominee. In 2000, Democrats helped McCain to win the Presidential primary over Bush.
I support a closed primary because it will help conservative candidates. I don't think much of either McCain or Romney, however. Tom Tancredo is the only candidate who is solid on all the issues.