With the turn of the calendar to 2022, Republicans are not only looking to the 2022 midterm elections but to the prospect of Donald Trump running in 2024. Trump is hugely popular with the party’s base and that popularity freezes the plans of other possible candidates for the 2024 nomination. Trump’s hold on that nomination is brittle, however, because of his age. On election day in 2024 Donald Trump will be 78 years old. That is one year older than Ronald Reagan’s age when he left office in 1988. Looking at the 2024 contest from the other side of the...