Think Jason Chavetzz. Quits out of the blue to work at Fox. Now we need a new campaign and special election for these flakes. If the quitter is in the majority party the seat should go unfilled. Blame the voters for not knowing their candidates.
Sometimes the voters have to hold their noses to keep the Democrat out. Think Mitch McConnell for one example. Although with systemic fraud, it’s the vote counters who choose and not the voters.