Must call into question the election result itself, questioning whether some aspect of the election process was valid will only resolve yes if it is stated or strongly implied that the election result was therefore also potentially invalid (note that I won't bet in the market in order to resolve impartially to the best of my judgement)
An outright claim that the result was invalid would also resolve yes
Reports that he questioned people around him do not count, must be a public announcement of some form (social media post, speech, interview etc)
Resolves N/A if Trump wins, or if Trump isn't the republican presidential nominee
Resolves no if Trump hasn't made any statements or questions to the effect within 3 months of the election
Related markets:
1,000