At the third and final presidential debate, Donald Trump shocked America by suggesting that he might not accept the outcome of the election.
He said: "I will tell you at the time. I will keep you in suspense."
But now he's shone a bit more light onto the matter.
Trump has threatened to challenge the result of the US presidential election if it is "questionable" - although he teasingly promised to embrace the outcome "if I win".
The Republican presidential nominee said he would accept "a clear election result" but was reserving his right to "contest or file a legal challenge" if he loses.
The revelation he made at the debate shocked even some of his most ardent supporters. Senator Bob Corker of Tennessee said it was "imperative that Donald Trump clearly state" he will accept the results.
Trump has warned repeatedly of impending, widespread voter fraud, despite no evidence to support him and plenty of evidence to the contrary.
But for Trump, this is all much ado about nothing because he confidently predicts that "we're not going to lose".