[triceratops]

> nothing else.

So the politician is getting re-elected even if they vote entirely contrary to their constituents' wishes? That's a bold claim.

[generalpass]

Nothing bold about it. Nothing correlates as strongly as campaign contribution, especially in enormous districts.

The voters matter less than you think, largely because in these huge districts there will be an incredibly diverse range of opinions. Short of ordering troops to come in and murder people in broad daylight, getting such a huge number of people to coalesce around any single anything almost never happens.