I have done an intensive county-by-county analysis study of the state of OHIO vis-a-vis the presidential election from 2008.
The document is in three parts and published at GOOGLE DOCS.
Part I
Part II
Part III
The excel spreadsheet with all the raw data
As was the case with INDIANA, the study of OHIO was fascinating and provides much thought provoking information.
The advantage of GOOGLE DOCS is that I can continue to update and correct a document and it will be automatically republished without the link changing.
Next state for intensive county by county study: VIRGINIA