Assuming honesty in recording is actually not problematic. As Eugine_Nier says, there will still be a set of voting outcomes that lead to Candidate A being elected, and a set of voting outcomes that lead to Candidate B being elected, and fraud only slightly changes the shape of the boundary between these sets.
It gets better. Turns out that the "area" of that boundary is minimized in a fair majority election. The probability of a vote being pivotal is only increased when the boundary is distorted by fraud (although, obviously, your vote will no longer be pivotal in exactly the same situations).
If the error rate in vote counts is 1%, that means you're 99% as likely to make the vote you intend to make. So if you had a 1 in 10 million chance to make a pivotal vote, that chance now becomes... roughly 1 in 10.1 million. This part doesn't really make a lot of difference, although you're right that it should be taken into account.
Assuming honesty in recording is actually not problematic.
I don't think you appreciate just how hard counting votes is.
Don't let your minds be killed, but I was wondering if there were any existential risk angles to the coming American election (if there isn't, then I'll simply retreat to raw, enjoyable and empty tribalism).
I can see three (quite tenuous) angles:
But these all seem weak factors. So, less wronger, let me know: are the things I should care about in the election, or can I just lie back and enjoy it as a piece of interesting theatre?