Educated and even intelligent people are by no means better at campaigning.
True.
In general, the idea that you can pursuade people by having superior academic arguments is widespread amongst the intellectual elite, and it is DEEPLY flawed, unfortunately. Infact, simply by formulating a nuanced a well-thought-out logical argument, you risk alienating a lot of stupid people who respond more much to zingers and just appearing "strong" and not like a "nerd" or a "technocrat".
Always remember that stupid people outnumber smart people by quite a massive distance. The unfortunate reality is that democrats need to dumb down their message to regain their strength amongst the working class.