Gerrymandering the boundaries of House seats.
Voter suppression by various means, including identity cards, voter roll purges, non-placement of polling stations in minority areas and so on.
Attempts corruptly to enlist foreign powers in influencing US elections, including Russia, China and Ukraine.
Undermining the separation of powers and the rule of law in protecting their president in disregard of their oaths.
Stacking the courts with right wingers regardless of their judicial expertise to ensure partisan right wing judgements for a generation.
Stealing a seat on the Supreme Court.
It's corrupt top to bottom. There's clearly a strategy of corruption. It isn't accidental.