Look at Hampshire College in MA—part of the Five Cillege Consortium.
For Public
UVM
Western Washington University
(which hasn’t been mentioned yet)
That said with an EFC of $0, OOS, better merit and aid is likely to be had at the privates mentioned.
What state of residency for tuition purposes?
Many big public colleges will have left leaning activist groups. They are also likely to have right leaning activist groups (though perhaps smaller due to general tendency of young people to lean left) and large numbers of politically apathetic students.
State: Maryland
The issue isn’t whether there are apathetic students but whether there are liberal groups thzt are all in, as in, canvassing every evening and doing stuff every weekend. …(I may be exaggerating a bit as this discounts doing HW 
but you get the idea).