No wonder Rick Santorum said he didn't want everyone to go to college.

More college means fewer Republicans.

Justin Wolfers tweeted this little chart showing the correlation between having a bachelor's degree and willingness to identify yourself as a Democrat.

Progressive Policy doesn't come out and say that education turns people into Democrats–the chart doesn't show the effect of higher education over time on individuals, just the state by state differences. But for every one percentage point increase in college graduates in a state, the percentage of people who identify themselves as Democrats increases by 0.75 percent.

The folks at Progressive Policy do say this:

The more college graduates, the more Democratic (and especially more liberal) the state. The fewer college graduates, the more Republican and (and especially more conservative) the state.

Anyway, take that for what it is worth. The charts essentially tell you what you already knew: liberal states like New York and Massachusetts invest more in educating their kids. Conservative states like Kansas and Texas spend less on it, and consequently have fewer people with bachelor's degrees.

Check out the rest of the charts showing the correlation between education investment and liberalism over at Progressive Policy.