Voter apathy is an issue, but I suspect the structural design of our representation has a bigger effect. Most seats in the Senate, and especially the House, are

Voter apathy is an issue, but I suspect the structural design of our representation has a bigger effect. Most seats in the Senate, and especially the House, are completely safe for the incumbent. Both parties’ primary systems heavily favor the incumbent, so actually voting out a particular politician in a deep red or blue state is almost impossible.