I just hope we won't be facing another 2000 election. Or, a 2016 election with half the country refusing to accept the results. It'll be what it is. But here is a question I've wondered about and maybe many others have as well. When are the early voting ballots actually tabulated?
Tabulating the ballots is not the same as counting the early ballots. The early ballots are processed at various times according to individual state election laws. Processing is comparing the signature on the outside envelope to the signature on file in the official record. Each state has their own time for doing this. In Illinois it is two days before the election, in Missouri five days before. But the ballot in the sealed envelope is not opened at this time in most states.
The actual tabulation of early ballots are normally counted and added to the in-person ballots at the end of the election day. In Illinois this is done after 7 pm on election day when the polls have closed. I remember this very well during my years as a judge. In Missouri it is on election day as is true of most states. There are a few outlier states as usual. Those ballots are then opened and put into the tabulating machine.
Here is a chart showing how all the states handle the processing and actual tabulating.
I find all this fascinating and frustrating while listening to many news reports trying to explain this. In the end, a state may have x number of early vote ballots but none (mostly) will be putting them into a machine til election day. So no one knows right now who is benefiting from them. No news report can be believed if they tell us such and such a state's early voting results show one or the other ahead. They can't know this til the polls close.
And, one last thing. Voting is left to the counties and most are well prepared for any eventuality such as voting machine breakdown, the education of the on site judges, etc. Madison County has always made sure the local judges know what's what and why. Plus they are often the most efficient at getting the results out to the public quickly.
Counties who always seem to have problems is mostly due ( in my opinion) to the lack of preparing the on sight election workers.