They stole the 2000 presidential, 2018 Georgia gubernatorial, and tried damn hard to do the same with the 2020 presidential. What are we even discussing here?
And the 1981 New Jersey gubernatorial. That's what forced the Republican Party (The RNC technically) to sign a consent decree that mostly prevented them from cheating until 2017.
With the exception of the 2000 Federal Election, this is why they stopped for this length of time but have already tried twice (that is known about) since then.
https://www.upi.com/Top_News/Voices/2020/08/11/Armed-poll-watchers-NJs-cautionary-tale-from-1981/3701597146308/Tom Kean Sr. was a decent person, was reelected in 1985 in a landslide and claimed to have no knowledge of what was being done to help him, and was most likely telling the truth, but some of his senior campaign staff got involved with some truly horrible people (most likely including Roger Stone.)