Paul Bledsoe is an old lefty, and I don't recommend his article for RealClearPolitics concerning political polarization, for which he blames Trump. He does, however, quote a statistic that I find both interesting and concerning.
In the 1950s, when pollsters asked Americans whether they would prefer that their child “marry a Democrat or a Republican,” nearly three-quarters did not care which. By 2016, 55% expressed a partisan preference for their future son-in-law or daughter-in-law. Similar partisan partitioning is now evident in how Americans choose a neighborhood to live in, a school for their children, and even their workplaces.
In other words, political polarization is more extreme today than it was 60-70 years ago. It feels more polarized today but I'm not especially happy to have supporting data.
Bledsoe's answer to political polarization is to elect Biden, who he says promises to be president of all Americans, including those who do not vote for him. I clearly remember Trump making the same promise and am positive Obama did too.
Every president believes he works for all Americans and, to some degree they actually do. Most, however, tend to work harder for the demographics who supported them than for the others. This is as close to a political constant as you're likely to find and totally what you'd expect.
