The Words They Used, by MATTHEW ERICSON, New York Times, September 4, 2008. "The words that speakers used at the two political conventions show the themes that the parties have highlighted."

This is a bubble graph of number of times words were used per 25,000 words spoken and a list of which speakers used which words. Ericson has done a good job of looking at phrases as well as individual words, of combining similar words and phrases, and of noting phrases that have very little or no use by one or both parties. Another good example of how, when we have access to the "raw data" (as opposed to transaction-based, search-and-retrieve, one-page-at-a-time access), the data can be used, re-used, and analyzed.