In the December 28, 2013 digital edition of The Washington Post, Kennedy Elliott and Dan Balz published an interactive data visualization titled Party Control by State. The recent gridlock in Congress has been blamed on political polarity — increasingly antagonistic political ideologies among Democrats and Republicans, with neither party in full control. But states are circumventing this problem by aligning completely with one party: Today, three-quarters of the states are controlled by either Republicans or Democrats, more than at any time in recent memory.

Here is a screenshot of their data visualization. Click on this image to go to The Washington Post Web site and interact with it yourself.