Voting Shifts by County Between the 2004 and 2008 Presidential Election
Voter identification is shown no where more clearly perhaps than during presidential elections. This map shows shifts in broad county party identification between the 2004 and 2008 presidential elections.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"US Election04-08shift."
http://en.wikipedia.org/wiki/File:US_Election04-08shift.png
Wikipedia
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