This idea is so damned good that I had to repost it from bread before last.
There is a good way to throw a wrench in election tampering plans. BALLOT RECEIPTS!
It should be mandated nationally that when you cast a ballot you should get a receipt that gives you a ballot number and shows your choices. Only you know which ballot number is yours.
After the vote is tabulated by the county clerk, it should be required nationwide that the county clerks post the ballot tabulation results for every voting precinct in the form of an excel file that we can pull off of the county website. Open the excel file (so they don't know which ballot you're verifying) and find your ballot and verify the entries against your receipt. If they don't match then you can lodge it as a miscounted vote. This prevents them from throwing your ballot away. You can get a receipt for a stick of gum but not your ballot?
If they throw your ballot away, you'll have a ballot receipt as evidence that your vote was not counted. If they substitute another ballot, the choices won't match your receipt. If they stuff the ballot box the precinct will be overvoted.
For example, if you have to overcome a 45/55 deficit but can't throw away any of the 55 because they'll check, you have to add the 11 percentage points to the 45 side so you'll end up with 56% v. 55% which is a statistical overvote; too many ballots. An obvious case of stuffing the ballot box.
We get receipts for just about every other societal transaction. Why not at the ballot box?
How can you argue that ballot receipts are racist?