Keith Poole of the University of Georgia, with collaborator Howard Rosenthal of New York University, has spent decades charting the partisan ideological shifts and polarization in Congress from the 18th Century until now to get the view of how the political landscape has changed from 30,000 feet up. What they have found is that the Republican Party is the most conservative it has been a century.   Original post on npr.org →   Comments on digg.com →