Watch polarization in the House shrink and grow, from the 1850s to today


http://www.dailykos.com/story/2013/12/26/1264123/-Watch-polarization-in-the-House-shrink-and-grow-from-the-1850s-to-today

Chart that you can adjust the timeline on:
http://bl.ocks.org/cingraham/7521814