Float a candidate under 60 and they win riotous support from Democrats and undecideds.
But who would that be? Do you remember the 2020 primaries? They started out with 29 candidates, the most since the modern primaries began back in 1972, and several of them were under 60, including Pete Buttigieg, Beto O’Rourke, Amy Klobuchar, Tulsi Gabbard, and Kamala Harris. Only Pete Buttigieg won any delegates (29 out of a possible 3,979). The Democrats have had many years to find a younger candidate who could unify the party. No such candidate has emerged, that I’m aware of, and so Biden, at 81 years old and showing signs of rapid cognitive decline, ran essentially unopposed in this year’s primaries.