The inability to see large voter fraud is based on the idea that fraud happens accidentally, or by individuals doing it on their own. It does happen. But when someone is caught, it usually has involved only one person doing something. Two years ago there was one woman, an election official in her county, who was caught falsifying ballots and voter registrations during the interim election. She was prosecuted. But it appears this was something she had undertaken on her own, though it was implied that she had done this for some time in previous elections as well. But larger ballot counting fraud happens at the county level or higher. And that is hard to prove. Votes are counted by the county clerk and his/her employees. County clerks are elected in most places though a few appoint them. Either way, it is a political position. Therefore, all the vote counters are from the party of the county clerk. By law, every state requires that observers from each party be present to verify that there is no voter fraud taking place while ballots are being opened and counted. Every state has always had an accommodation for voting by mail, formerly called absentee voting. It has always been the case that absentee ballots had to be requested, sent out, voted, notarized, and had to be received by the county clerk prior to election day. This year, Democrats led the rush to make all voting mail in and to abandon the established methods of ensuring that every vote was a legal vote. They eliminated the requirement of ensuring that the registered voter was the one who filled out the ballot and mailed it. In some states they eliminated the requirement to request the ballot by mailing ballots to everyone they had on their voter rolls, rolls which they have vociferously fought in court the last 8 years to keep anyone from going through them to remove dead people or people who have moved elsewhere and are no longer in that jurisdiction. Then, even though they mailed out the ballots starting the end of September, taking Pennsylvania as an example, even though the state law allowing mailin voting specified that all ballots had to be received by the county clerk by election day, the governor decreed that they would take them any time as long as they were postmarked by Nov 10. Why anyone thought the ballot would take that long to get to the clerk is beyond comprehension, considering the latest date to get one was October 27, and we're talking about mail that stays within one county, not crossing the country. They used made-up stories about Republicans slow-walking the mail to go to court and get a judge to say that they had to accept votes that late. So although Congress gave the state legislatures control of voting procedures, a Democrat governor and Democrat judge made a new law on their own.
Then you add in that in Philadelphia, the city which "swung" the count after election day, they refused to let observers watch the process, then after an injunction let them in but required that they be 30' away and put up barriers around the counters so nobody could see them. Observers are supposed to be able to verify that each ballot envelope is properly completed and each ballot is correctly marked so they can contest a particular ballot if they see something wrong.
Then you add in the history that in these Democratically controlled cities we have a long history of late-night "discoveries" of caches of tens of thousands or hundreds of thousands of absentee ballots in the trunk of someone's car, in a closet in some other government building, and so on, and the court cases involving those, and in this election the same sort of thing filmed at 4:30 am in Detroit with vans pulling up to the supposedly closed counting place and delivering loads of ballots, and you can see how questions arise as to legality.
Had they not gone to the lengths of making sure that there could be millions of mailin ballots available to be used, then removed verification at the time the ballot is completed and sealed, then allowed the ballots to be counted if they arrived days late, then allowed the ballots received to be "healed" rather than rejected, then refused to let legally mandated observers do their jobs, then it wouldn't be so unreasonable to suspect that there might be a plot to have hundreds of thousands of late mailin ballots manufactured ahead of time to insert into the flow if things didn't go their way on election night.
