Over at Total Politics. The rules are at their website- all you have to do is to list your Top Ten UK Blogs, (your favourite blog at Number 1) and then email them to the address at their site.
Any support for this blog and for the Campaign 4 Public Ownership blog would be greatly appreciated. As for the other eight blogs, well, the organisers request that bloggers don't publish lists of other blogs to vote for- but if you want some ideas, then there are links to some excellent blogs in the links section on the right.
Voting closes at midnight on 31st July, UK time.