rigged election
The conspiracy theory, floated in advance by a candidate afraid of losing, that his loss could never rightfully have happened.
"The election will be rigged" Trump bellowed, because everyone knew the Democrats were massively powerful, unethical, manipulative. The Democrats had already held a "rigged election", after all, which put him in office, and they would of course do it again.
Rigged Election
(Noun) An election where too many black people voted. See also: "Election Fraud".
Donald Trump: "There's no way we lost Georgia. There's no way. That was a rigged election. I had two elections. I won both of them.”