There should be a database of those public officials who have blogs. I can focus on the state of Illinois or I can look at anyone across the state. I imagine even if there is a low number of officials with blogs, that it would still be too numerous to even do that.
Over on Illinoize is a blogging politician, state Rep. John Fritchey, who has his own blog The Open House.
Today I find another politician with a blog Wayne Sinnock, a city councilman in Highland, Illinois.
The Mayor of Elburn, Illinois also has a blog of his own as well.
I'm sure there is a much larger universe out there and I'm willing to look for them. If you want to be open about doing the business of the people then I think a blog is one way to maintain some form of communication with the people. It is something that should be encouraged.