Olympia Snowe.
Yes she is the senior Senator and Susan Collins is the junior Senator.
The difference is that the senior Senator has been in office longer than the junior Senator.
As of October 2021, Maryland's senior senator is Ben Cardin and its junior senator is Chris Van Hollen.
A junior senator has served in the senate for a shorter time than the other senator from his state; that other senator from his state is a senior senator.
Each state has 2 senators. The one who has been in office the longest is the senior senator.
Senator Susan Collins represents Maine in the U.S. Senate. Senator Susan Collins represents Maine in the U.S. House of Representatives.
He is the senior senator from Arizona.
There are 2 senators from each state each serving 6-year terms. The senator with the longer term in office is known as the "senior" senator while the other is known as the "junior" senator.
Carl Levin.
Hugh Segal
Daniel Inouye.
Dianne Feinstein