posted by gutIt's impossible to quantify that statement. There are A LOT of morons on the left.
Like 2/3 the country are "blue no matter who" or "red until I'm dead". How informed they are probably varies, but advertising is aimed at turning those voters out.
Many of the rest who claim to be independent are making their minds up on little else than friends or family and a few ad spots. You don't get candidates like Trump and Biden/Kamala unless most of the electorate are uninformed morons.
It is impossible to quantify - just my anecdotal observation. Someone in a different life circumstance than me could say something different.