The one thing that has really impressed me about this site is how the community at large creates the compelling content that makes the site worth visiting. Nothing against the folks who post things to the front page, but the reason to keep coming back is hidden in all of the comments and diaries that can be found under the surface.
As in Kos, the compelling content that keeps readers coming back to the state blog should come from the community at large. Below the fold I describe my vision of the perfect state blog based on the technology used on Kos.
The party's major players should be able to post to the main page. This could include (among others) the state party chair, officials elected in statewide elections, representatives in Congress, and leaders in the state legislatures. Obviously, we can't expect these people to create the posts themselves, but the responsibility could be delegated. Enough people should be included so that you could consistently get 4 to 6 front-page posts every weekday. At a minimum, any press release from the state party should be posted, or at least linked to, from the front page.
Any elected official from the party as well as candidates on the ballot for elected office should be able to maintain diaries. Readers should be encouraged to subscribe to diaries from all of the people who represent their district. Ideally, a reader could enter their zip code and be given a complete list of the diaries that are relevant to them.
Ideally, only members of the party would be able to post comments but anyone could view everything. The reason I say this is so the opposition doesn't hijack the site with their rhetoric. If the guys on the right want to post to a blog, let them create one.
I would think a couple of posts each week should be considered a rough minimum at least in busy election and legislative times. Some could be policy based, others may be used to promote public appearances or thanking others who attended appearances. As long as there is some meat to each post, they should be pretty well received. Writers don't have to summarize your worldly views every time. Some of the posts could even come from family members or other surrogates.
As in the movie, "If you build it, they will come." The compelling content has to be available for a while before the site traffic will really begin to build. Party officials have to have the faith that Ray Kinsella (a.k.a. Kevin Costner) had when he built that baseball diamond in the middle of his cornfield. It wouldn't hurt to supply a link from the party homepage as well as a mass e-mail or two telling people about it.