It’s only a problem if your professors are bringing their political views into class. Otherwise, who cares what their political affiliation is, as long as they’re competent at teaching their respective subjects? In fact, if you had to ask them in order to discover what their voter registration card said, then they’re doing their jobs properly.
I’ve taken over 40 courses at a fairly liberal university. I’ve had maybe 4 professors mention their political views in passing, and they affected the content of only two courses (of a sort where it would be difficult for the content to be unaffected) and I only had one professor try to drag politics into a distinctly non-political course. Incidentally, I failed that course - not directly due to political conflicts, but because I was too sick to go to all my classes and I figured if I had to miss something, I might as well miss the class where I hated the prof... but the other 35+ classes, wouldn’t have a clue what their voter registration card said (if they actually had one to begin with, I think half of them still had green cards).
Had a few conservative profs at university, I tried to take as many courses with them as I could fit on my transcript, and I wrote glowing reviews, etc. If all Conservatives did the same, then there will be more conservative professors.