Article appeared in WSJ Opinion by two Yale professors (article) that there is 0% political diversity with the faculty. While WSJ was more generalities, let's see what we can find.
For the 2020 race there are 224 worth $231,430 to politicians, want to be president, PACs etc.
Donations to Democrats or Democratic leaning PACs: 200 = $187,743
Donations to Independent PACs (roughly 50/50 distribution: 13 = $5100
Donations to Republicans or Republican leaning PACs: 11 = $38,587
0% may be overly dramatic, but not far off target.