It is of course ludicrous to think anyone would cheat in an election. People cheat on their spouses, cheat on taxes, cheat on tests, cheat in sports. But, luckily humans, and especially Americans, have a built in complete and utter aversion to cheating in elections. There is really no need to even bother looking into it, since we never look too hard for it we have no evidence, and since we have no evidence, no need to look too hard.
Racism, of course exists. We can even to change the definition, if needed, to help find it.