Nate Silver uses numbers  to show why this year’s elections represent a nationalization of congressional politics.  He compares the results of the 2008 and 2010 congressional elections and offers insights into what 2012 may look like—GOP now holds more potentially vulnerable seats than we do.  Find this illuminating read here: http://fivethirtyeight.blogs.nytimes.com/2010/11/08/2010-an-aligning-election/