So you're suggesting it's a chicken/egg kinda situation? That while it could be single women are more prone to paternalistic policy making due to some sort of innate maternal drive, you're suggesting such people are less desirable as a life long partner?

It's not a terrible theory, though there is other elements at play, like long documented generational shifts in voting patterns (eg the young of that era tend to be more inclined to vote left while that same group will end up more right wing as time goes on. Pretty clear cut example of that is hippies being baby boomers). However, there's also the counter point to that about constant political shift, in that today's Republicans are yesterdays Democrats, so have those demographics actually shifted, or has the Overton Window just moved to make them appear more right wing?

The overall point I'm trying to make is that for most of these things that can be presented as chicken vs egg dichotomies, it's less a dichotomy and a little of both, and in some cases can even feed into one another.