If "economic" and "social" issues are separate spheres....

[Indy Texas 🇺🇦🇵🇸]

Well, first of all, you're assuming it's impossible that there can be a correlation between economic and social views (that someone who is socially left-leaning is more likely to be economically left-leaning as well, and vice versa, or the same with right-leaning people).

Also, particularly in a two-party system, your political views more or less become a function of which "product" you decide to purchase in November of even-numbered years (do I pick the red box or the blue box?). The product is a bundle of social and economic views. We have two bundles to choose from. The manufacturers of the product chose their respective bundles with the goal of obtaining as much market share as possible.

The lion's share of voters think about who they're going to vote for with about as much effort as a disinterested participant in a March Madness bracket pool. I know that's hard for the sort of people on this forum to understand. Most people don't think about this stuff at any point apart from maybe a few weeks before election day. Voting Republican or voting Democratic is simply a force of habit, like the fact that I always buy Tide laundry detergent. Why do I buy Tide? Because that's what my mother used when I was growing up; that's what her mother used. I can't give any rational explanation for it. And there are plenty of people who vote the way they do for similar reasons.