Members of Congress go to Washington and establish reputational styles which help explain to constituents the work that they do while on Capitol Hill. There is no one way to “correctly” represent a place, but a representational style chosen by a member reflects in part the priorities of the geographic constituency the member represents and their own personal inclinations born from their pre-congressional careers. Richard Fenno (1978), in his book Home Style, documented the various representational styles developed by members of Congress and used by them when explaining their “Washington Work” back home. Fenno documents three rough representational types: the constituent servant, the policy expert, and the member of Congress as “one of us.”
He pooh-poohed the idea, saying that as a member of the "loyal opposition" it was his job to occasionally criticize the other side and that there's nothing amiss in his relationship with Montana's senior senator.