Propaganda is telling Americans for 4 years that their president is healthy, brilliant, and sharp, while they themselves see a fading grandpa who can't function on his own. Which leads people to not trust anything else the same media tells them. And then they start wondering about who actually is the president... Is it Jill or someone whose name they don't even recognize? And they get real angry at being taken for a fool, and vote accordingly. The last election was lost by the Dems rather than won by Trump.

This article is yet another example of how this happens.