The only "evidence" I've ever seen cited (by western media of course) was all stuff the US does on a larger scale: blocking candidates from ballots, closing/changing polling places at last minute, etc (can't remember the rest, it was too stupid to take seriously). I have however read several accounts that the elections were overseen by hundreds of world officials and has been repeatedly said to have been one of the most democratic elections ever.

Hmm, believe this or the US who has been meddling in South America for 70+ years? 🤷‍♂️