That’s 10 sitting senators who died in office, all in the 65th Congress. Data on Senate deaths in office shows that the period from about the 50th to 90th Congresses was particularly deadly for sitting senators. At the time when the number of deaths of sitting senators was unusually high, you’ll notice, the average age of the Senate was also at a historic high. For much of that period, the average age of the Senate was in the mid-50s. The good news is that Senate deaths are now relatively rare.

Source: Washington Post September 30, 2023 07:21 UTC