I believe you are mistaking the cause for the effect. Dumb down the electorate, and you have to dumb down the candidates through a process of political Darwinism. If an honest conscientious candidate is presenting well-reasoned honest positions to this electorate, they look at him like a hog looking at a wrist-watch. Meanwhile his opponent says, "I'll make you happy. I will give you bread and circuses." The electorate examine the two, and elect the latter. Politicians learn from this, that being honest with the electorate means defeat, while giving them outrageous fantasies wins.
Excellent post! People claim they want honesty and real solutions, but the fact remains that most do not! A lot of people seem to have the mentality that I want my money...I want it now...and don't tell me I can't have it! Most people will choose style over substance every single time...especially in a Presidential election!