A previous thread related to this discussion.
Culturally a huge number of straight men are happy partnering with a woman of slightly lower or roughly equal status (income as a major proxy but also education level). Fewer men, especially those of lower status, as as thrilled to be the lower status member of the relationship. The converse is also true.
In America today there are more women reaching higher education and often income levels than men. Higher status. Lower status men are intimidated and these women are often less interested in them, often also are of different values and interests. So yes more unpartnered highly educated higher status women often of more liberal values, and more unpartnered less educated less well paid men often of more conservative values.
The latter group can be dangerous.