Vote flipping: fraudulent transfer of votes from one candidate to another, leaving the overall vote count unchanged
As can be seen, by the time you have counted 40% of all the ballots, the line goes flat: you have a reliable predictor of the candidate’s final result. All poll science is based on this sort of predictability. There is a zero correlation between the alphabetical order of the precinct and the cumulative result of the candidate.
Now let’s order the precincts by number of votes cast and let’s start counting from the smallest all the way to the largest. Start with the Republican Primary in Tennessee, 2000.
Zero correlation. Basically, if you sort the precincts randomly, you end up with the same chart:
Below are shown more historical examples, both at state and county level. All sorted by Precinct Vote Tally.