Sure, this (xgboost with forests) is *purely exploratory*. I picked up on it nonetheless because the UK is so weird compared to the US/rest of Europe where radical right party support goes up with age *then comes down*.

Various explanations - for the general pattern - abound, but one I've been thinking recently is just risk-tolerance. E.g. "Punch Foreigners In The Head" parties appeal to the elderly wrt negative sentiments about Foreigners, but repel them because Punching is a young man's game**