I don't know if you read Wired, but I was quoted pretty heavily in the article called Which Presidents Have Mastered Google? You can read the article yourself, but what I liked about the article was that Sarah used a variety of sources and searches to show who really understands search marketing; unlike the AdAge article that I ripped on a few days ago which didn't reference the following sources. Wired pulled in the iCrossing Study, Apogee Web Consulting's Richard Ball, Peter Greenberger from Google, some searches on her own, and quotes from ME.
I do firmly believe that the real game in Google for politicians is to not only buy versions of the candidate's name but to focus on issue words and content targeting. The only issue with issue targeting (did that on purpose) is that it takes some time to see a return on your investment. And, in order to be more efficient you need to really focus on how Google charges for clicks and hone your marketing strategy. I can't go into details, but believe me we have it down to a science and that's because I've been running search marketing campaigns for a LONNNNGGGGG time.