Probably unpopular answer, but it's not some clear cut "this political party has better policies for everyone". Republican policies usually are better for people living in rural areas, and Democratic policies are usually better for people in cities. I'm sure people will debate this, but this is the reason why people typically vote depending on where they live. At the very least, they believe that their party has better policies for them and their way of life.
My personal (anecdotal evidence) is that I work for a small business in a rural area, and our main customers are other small business owners (usually self employed or under 5 employees). Over the last 3 presidents, the Obama years were rough for our company, we had explosive growth during the Trump years, and then we've had stagnant growth over the past 4 years. Our largest competitor went out of business this past year, which sent us a lot of new customers, but we've also had a lot of our customers go out of business as well, so we've been pretty stagnant. Being stagnant isn't terrible, we don't have shareholders or anything, but the cost of living has increased and company profit/wages haven't which is a problem. That said I know we're doing pretty well compared to a lot of people here.
Another (once again anecdotal) example is that I have a friend who paints murals full time, for the past 30ish years. He told me that he does well with either Republicans or Democrats in office, but that his customers change. During republican presidents, his customer base is usually local businesses wanting to decorate their stores. During democratic presidents, his customer base is usually towns, state buildings, schools, etc.
But anyways, I'd be very interested to hear from some people living in cities if there's a visible uptick in income/etc when we have a democratic president, or in general what your personal observations are on how which president affects your local businesses/income/prices/etc.