Samantha Bee went back in time to explore the origins of the massive voter fraud lie on Monday.

The “Full Frontal” host dug deep to find out just why Donald Trump has been baselessly claiming that “millions” of people voted illegally in this year’s presidential election.

And it goes back way further than the president-elect, according to Bee. But he is propagating the theory, she added.

“For the record, massive voter fraud is a lie, but this lie didn’t spring Athena-like from Donald’s collapsing pumpkin of a head,” she said. “He’s a marketer, his big lies are like his buildings, he doesn’t build them, he just slaps his brand on them and tricks the press into the promoting them for free.”

Check out Bee’s full investigation in the clip above.