Here's a link to an online political data analysis textbook I put together last spring:
Feel free to use it if it works for you.
|Correlation=.77 (previous high (2008) =.70)|
|Correlation=.69 (previous high (2012)=.60)|
|Correlation -.79 (previous high (2012)=-.73)|
The Relationship between Level of Education and State-level
Presidential Outcomes, 1972-2012
Note: Changes in both variables are measured from 1972-1980 (averaged) to 2004-2012 (averaged).
Adapted from Altered States.
|Note: this figure only includes states for which there were Pollster estimates estimate for this point in time in both 2012 and 2016|