The majority of professors are far-left/liberal - about 60%. However, their influence isn't as great as you say.
About 50% of freshmen students identify as moderate, 30% liberal, 20% conservative.
Here's an article from Washpo that I know a reasonable guy like you will appreciate:
"The dramatic shift among college professors that’s hurting students’ education:"
https://www.washingtonpost.com/news/wonk/wp/2016/01/11/the-dramatic-shift-among-college-professors-thats-hurting-students-education/?utm_term=.dd3449fb9013
"numbers suggest that professors' liberal tilt does have some impact on their students' ideology, but not much.
The proportion of students who characterized their political views as liberal or far left increased 9.2 percentage points from freshman to senior year.
Among the college class of 2009, 39.1 percent identified as liberals, 38.5 percent called themselves moderates, and 22.5 percent said they were conservatives. While more liberal and less conservative than the general public, the seniors were also considerably less liberal and more conservative than the people who taught them.
American politics seems to work best when the two main factions are animated by rigorous thinking and serious ideas. And if there's no home for conservative ideas at today's colleges, it stands to reason that our political discourse will be poorer for it."
Now's ze time on shprockets ven we donce:
https://www.youtube.com/watch?v=QHZR9SA5pOg
That's all the time I have, untill next time - Auf Wiedersehen!