This afternoon, via Twitter:

Donald J. Trump @realDonaldTrump
Rumor has it that Senator Joe Donnelly of Indiana is paying for Facebook ads for his so-called opponent on the libertarian ticket. Donnelly is trying to steal the election? Isn’t that what Russia did!?
4:05 PM – 3 Nov 2018

And an easy observation:

Soledad O’Brien @soledadobrien
The President says Russia stole the election:
[….]
4:15 PM – 3 Nov 2018 from Connecticut, USA

That went right over his head, didn’t it?