The use of 'in group' rhetoric

After the Linkugel lecture and the discussion of the use of rhetoric to frame (or re-frame) groups, I find the article below to be fascinating:

http://www.huffingtonpost.com/dawn-teo/mccain-palin-and-the-luci_b_136572.html

The author discusses the rhetoric of the McCain campaign and the framing the campaign uses to portray Obama as not part of the 'in group' in order to play on the fears of voters. The article is pretty obviously partisan, but, I think she raises some interesting points.