People much closer to the scene of the crime(s) are looking very closely at how ballots are being counted and how ballots arrived to be counted in the US Presidential election. It is going to take a while.
Rigging an election is tough. Somehow you have to get enough ballots in the count for your guy (and get rid of the other guy’s, if possible). Mail-in voting made this, in principle, easier as there are all sorts of ways to get ballots which have been mailed out ranging from simple theft to outright purchase. The trick being to avoid over egging the pudding, that is bringing in more ballots than are plausible.
But it is more complicated than that. What do you do with down ballot races – every ballot will have a congressional race and some will have a Senatorial race and other items to vote on. Moreover, because of Congressional Districts you can’t really just roll in with a couple of hundred thousand “generic” ballots. If you want to cheat in Philadelphia you need ballots which have the correct Congressional races on them.
With mail in votes there is also the added problem that the person ostensibly mailing them in a) needed to be alive, b) at a specific address at the time the ballot was sent. These are checkable facts so, if you are going to steal you need to get them right.
If you want to add a couple of thousand ballots to the count, none of these issues will be insurmountable. But the whole thing gets a lot more complicated and prone to detection if you need to add tens or hundreds of thousands of ballots to drag your man over the line.
As things get more complicated the likelihood of detectable errors increases. So does the number of people who have to be in on the “steal”. Every additional person increases the risk of detection.
Was 2020 stolen for Biden? I don’t know and neither do the Trump people; but, if it was, there is every chance that the theft will be detected in one or more states with a bit of scrutiny. At this point, the Trump lawyers are attempting to have the Courts require that scrutiny. The precedents set back in the Gore/Bush election suggest that the Supreme Court of the United States will be perfectly willing to make such orders as are required to “true the vote”.
If the steal is on the scale of hundreds of thousands of votes it will almost certainly be proven and those tainted votes could be excluded from the final count.
What then? Nothing good I am afraid. The Democratic faithful will demand that every vote be counted, the Republicans will say, except the illegal ones. Do overs in Michigan, Wisconsin, Pennsylvania, Nevada, Georgia and Arizona would be one way out; but the logistics would be a nightmare.
The problem with cheating is that it ruins the game for everyone.