Another rigged election was Wisconsin governor in 2018 where Evers defeated Walker...
Copied GP - just noticed they need an editor ;) (Four, not three prominent examples; Minnesota senatorial race of 2008, not 2010)
I live in WI, and witnessed the vote dump at 3am for Evers. I was refreshing the vote total site every 15 minutes. It went from a night long tie to a sudden dump of 30,000 for Evers. Total fraud.