this is interesting and out-of-the-box, so I will try an "add"

people are not entirely the same individual through their life cycle. Adolescent/young adult patterns are driven largely by a desire to break out of the mold of the past, while parenting/administration is driven by stability, perhaps efficiency or perhaps grandeur.. creative drive is more likely attributed to the adolescent side, while overwhelming strength is likely built on the stability side.

Political leanings change with external circumstances, like a group responding to an external threat; and internal circumstances, a person or group's worldviews. The WEIRD (Western, educated, industrialized, rich and democratic) may believe in the individual drive, but raising children and running a business are group activities. The values of the group, in most places, in most times, are going to drive political choices.

Summary? a voter will change over time, secondly their social circumstances drive that change as much or more as the individual.