Dead people voting,
Admins swapping votes,
Poll workers running the same vote hundreds of times,
Fake ballots that are printed out,
Hackers getting into the machines that are not supposed to be connected to the internet, but are,
Votes being stored on foreign servers where admins can access the physical storage machines and change votes,
Vote harvesters giving gifts to old people that vote dem,
Drop boxes that are not monitored with people dropping off 10-20 votes per drop box to 20+ drop boxes, caught on video,
Software updates that flip votes (a 12 year old with a screw driver and a usb drive did this),
Illegals voting with no ID,
Votes being stolen,
People voting that moved out of state and are not eligible,
Military votes being thrown away,
Trucks of filled out ballots arriving from out of state,
Polling places shutting down before the votes are fully counted,
etc...etc...