The Secret Behind Red and Blue

I haven't been losing sleep over why the Republicans are the red states and the Democrats are the blue states, but it is a curious piece of cultural trivia. It turns out that there is a method behind the madness, as Kevin Drum explains in Washington Monthly...

Since the advent of color TV, there has been a formula to avoid charges of giving any party an advantage by painting it a "better" color. Here is the formula: the color of the incumbent party alternates every 4 years.
Kevin's post also shows a table that explains why the Democrats have so often ended up red.

Neat reading!