There was actually fraudulent activity across the nation in 2020 [and other years, of course].
The bloodbath Nazi Pelousi took in the House would have been worse had they not been stealing US House seats, too. The Dems would have lost control of the US House.
I've identified one House seat in Iowa that they stole, and they tried to get two others [four House seats in Iowa, and one of them was a lock for the Pubbies]. They missed getting Marianne Miller-Meeks' seat by 6 votes - and Nazi tried to steal it anyway, as you'll recall.
I have a technique where I compare the presidential election turnout by county from 0bama 2008 with Brandon 2020.
The cheating shows up as if you are shining a blood-spatter light on it.
Of course, which is why GOP Governors need to put election integrity changes front burner, it's in their interests and we cannot do it.