I mean the democrats rigged the election via gerrymandering etc in their areas but the republicans did too in the areas they control so neither one could be said to be a victim of a rigged election so much as two groups frantically trying to rig an election harder than the other.

American politicians don't ever even bother campaigning outside their base they just try and manipulate the electoral system to leverage the base they have more effectively by drawing up districts and making it harder for the wrong people to vote