A lot of them knew that thing might hurt them politically, but they did it because they thought it was the proper thing to do (at least that is how the narrative is presented). You know....doing their jobs and shit.

A lot of the stuff Sanders is talking about is not that unpopular. There is quite a bit of public support. It might not be there in the swing districts. But it has broad support. So yeah, some people might lose their seats. But sometimes you gotta take one for the team.