It’s the same old thing they’ve been using forever. Remember how George W. Bush was a complete imbecile because he occasionally misspoke or prounced something a little differently? Reagan was either senile (years before it actually became true) or a pleasant idiot? Gerald Ford was a stumbling, bumbling fool? Republican Presidents, in general, don’t have sense enough to come in out of the rain and probably can’t tie their own shoes.
A Democrat President can talk about visiting 57 states, can say “corpse-man,” and err, umm, ah, err ad infinitum and he’s still the smartest man to ever occupy the office.
Haven’t you gotten the word? All Republican Presidents are either morons or, when they clearly aren’t, are EVIL.
All Democrat Presidents - and their wives - are so smart that they are on the verge of winning simultaneous Nobel Prizes in every category, and on top of that are also candidates for sainthood.
Just ask the Dems and their water-carriers in the media, they’ll tell you.
I vividly remember "An amiable dupe." Their snobbery was evident even then.