Not sure if this has already been suggested or is already being done but here goes:
Kos should interview candidates and/or people currently holding office (I'm thinking along the lines of Busby, Lamont, Tester,etc.) and put video feeds on the site as diaries. That way people across the country could get to know a cantidate much better (and possibly be more inclined to donate money). It would also be great to hear them answer the questions people here would want answered.
Accessing the candidates should be no problem. Kos has now proved through sheer numbers and amount of dollars raised that this site can have an impact (possibly a huge one) on a race and can really boost a cantidate.
It would be a win-win situation and would bring Kos and the chosen interviewees even more bloggers and attention.