Barbara Boxer is saying that Diane Feinstein needs to retire.
Here are list of states which the junior US Senator left before the senior US Senator and the states senior US Senator is still in office.
VT(Leahy-D) - Jeffords-I/D left office on 1/2007 and Sanders-I/D will probably leave on 1/2025. Leahy-D will leave after 1/2025 and before 1/2029.
RI(Reed-D)- Lincoln Chaffee-R lost re-election on 11/2006. Could Chaffee have stayed in office if he switched parties. Became a Democrat before 1/2006.
OR(Wyden-D)- Gordon Smith-R lost re-election on 11/2008.
OK(Inhofe-R)- Tom Coburn-R left office during the 2014 elections.
NY(Schumer-D)- Hillary Clinton-D become a cabinet Secretary on 1/2009.
NH(Shaheen-D)- Kelly Ayotte-R lost re-election on 11/2016. Maggie Hassan-D might lose in 2022.
MN(Klobuchar-D)- Al Franken-D left office due to a scandal.
KY(McConnell-R)- Jim Bunning-R left office on 1/2011.
IA(Grassley-R)- Tom Harkin-D left office on 1/2015.
IL(Durbin-D)- Peter Fitzgerald-R left office on 1/2005, Barack Obama-D became POTUS on 1/2009. Mark Kirk-R lost re-election on 11/2016. Any chance Tammy Duckworth-D becomes a cabinet Secretary during Biden’s 2nd term or Harris’s 1st term before the 2026 election.
CO(Bennet-D) Cory Gardner-R lost re-election on 11/2020.
CA(Feinstein-D) Barbara Boxer-D left office on 1/2017. Kamala Harris-D became VPOTUS on 1/2021.
AL(Shelby-R) Jeff Session-R became US Attorney General on 1/2017. Doug Jones-D lost re-election on 11/2020.
OH(Brown-D) Robert Portman-R is going to leave office on 1/2023.
PA(Casey-D) Pat Toomey-R is going to leave office on 1/2023.
= new reply since forum marked as read
where Boxer says Feinstein needs to retire.
Color me surprised. 
