I would add, how many election prognosticators are there - 1000's, I presume. How many presidential elections have bhere been since 1984 - ten? Of those how many were easy well the incumbant will be re-elected, starting with the 1984 election of Regan, and the 1989 reagan third term GWHB, who subsequently got dumped because he went globalist and broke the no new taxes pledge [needed to to pay for globalism].
So out 1000 trials of 10 throws of the dice [where there are only two numbers that can come up1, or 2], there is a high probability that a large number of trials will "predict: all of the elections - that's just statistics. Then with a litle bit of thinking about it you can increase the odds of a correct prediction significantly. And if you have loaded dice like 2020, you can do even better.
And this Allan Lichtman only claims to have predicted nearly all of the elections. Not all.
Lichtman is a democrat partisan hack.