I’m sure you must be largely correct about the temporary effect of a generational alliance.

Trump is so divisive, that members of my parents’ generation feel sincerely repulsed by him. They were raised, no matter what their political alignment, with different social values. If they voted for Trump in 2016, many of them did so while swallowing hard.

This year, most of my older Republican family have decided they can’t swallow that hard.

Will inertia have any effect in 2024? Impossible to answer, but I would hope that some people who had to work so hard to change a lifetime of voting preference might keep their minds open just a little.