What does "decades" mean? Just to comply with that basic requirement. A "decade" is an interval of 10 years so saying "decades" implies at least two of said 10-year intervals where election denial happens more than once for a prolonged period of time, usually lasting until the present.
I mean, Russia swinging the vote online towards Trump is an ascertained fact, confirmed by the Russian themselves earlier this year. As is the Troll factory. Unless you're saying Russia is lying about itself just to stir chaos? And it didn't depend on Russia alone either, since Cambridge Analytica and Facebook case is real. Not that this is election-denying in any way, but sure, let's count it like that.
More importantly I said nothing, that was Trader Boomer and you going off the rails to feed your own little fantasies and failing to score points.
The original sentence is not even syntax-wise correct but sure, I suppose that "2 instances", which also had grounds of truth, rather than being completely baseless, in twenty-two years counts for your two misleading heads as "been denying for decades" about something. Usually to say that you'd require something that still keeps going on, which there isn't, but sure, you say they did the same thing Trump did




