“We have serious concerns that the result announced does not reflect the will or the votes of the Venezuelan people,” he [Antony Blinken] said.

read: We have concerns that the people didn't elect the candidate we selected for them and will continue to protest until you select a sympathetic candidate. Have you considered Juan Guaido perhaps?

"Francisco Rodriguez, a professor of international and public affairs at Denver University, said the Venezuelan opposition must document any alleged fraud and make their findings public."

Honestly, fair take from somebody in the US. If the opposition does have clear evidence of fraud, they need to document and provide that. If they aren't showing anything, they probably don't have said evidence.

Ignoring for a second all the western interference, the fact he won with 51% of the vote makes me more inclined to trust the results at face value. The amount of precision it would take to fudge results JUST enough to win with a majority but not so much as to seem unrealistic would be extremely difficult to pull off. Unless people think fraud is as easy as just swapping a couple numbers around in the final tally.