Collocations for senator - noun

American, US
Democratic, Republican
conservative, liberal
junior, senior
state
a Republican state senator

former
the former US Senator, James Hurley

fellow
He was pilloried by his fellow Senators.

key, leading
We'll talk to two key senators on the Intelligence Committee.

elect, elect sb (as)
become
In 1988 he became a US Senator.

senators and congressmen, senators and representatives (both AmE)
Write your senators and congressmen urging them to protect the US constitution.
I sent off a few letters to my senators and representatives.

senators on both sides of the aisle (= Democrats and Republicans)