It’s not as simple as reported:
Put another way, this study says that liberals are a coalition of rich wimpy men and strong poor men. Bu contrast, conservatives are a coalition of rich strong men and poor weak men.
The study found that women are different from men: a woman’s upper body strength did not affect her politics.
Partisans would like to think that it is the smart people who support their side. In reality, though, that doesn’t work: both sides have their share of both smart people and dumb people.
Yes, the notion that smart people are naturally “progressive” is just one of their many conceits.