“There is no serious person out there who would suggest somehow that you could even rig America’s elections, there’s no evidence that that has happened in the past or that it will happen this time, and so I’d invite Mr. Trump to stop whining and make his case to get votes.” .....

— Donald J. Trump (@realDonaldTrump) February 20, 2018

I haven't Googled yet, but I think that was Obama, some time during the 2016 campaign.

UPDATE, 1 minute later: Yep.



UPDATE, 3 minutes ago:

....The President Obama quote just before election. That’s because he thought Crooked Hillary was going to win and he didn’t want to “rock the boat.” When I easily won the Electoral College, the whole game changed and the Russian excuse became the narrative of the Dems.

— Donald J. Trump (@realDonaldTrump) February 20, 2018