Just for context, before voting machines, people voted for about 175 years. During those years, at least two very corrupt political machines, Tammany Hall and Cook County, were powerful, Tammany Hall for longer. And those were only the best known ones.

One of the things mentoned in Molly Ivins, Shrub was LBJ's first election to the US Senate. How the votes from one county in Texas were four days late and turned him from the apparent loser to the winner.

On the flip side, I've posted for years. For a good chunk of that time, I posted with Democrats, who seemed to believe that every election--not only Presidential--that Democrats lost had been "stolen." I cannot remember how many times I read that that something had made the election "close enough to steal." So, in their views, at least, an election cannot be stolen via machines by orders of magnitude (the actual definition of which makes my eyelashes hurt. https://en.wikipedia.org/wiki/Order_of_magnitude).

Bottom line: If election fraud is successful, no one can prove it happened. No one may even know it happened, although circumstances may be suspicious, as in ivins' tale about LBJ. So, I don't know what is true or false about election fraud. And, after all, enough to affect the outcome suffices.