Yes, they are incompetent and/or stupid.
No, they are not incompetent and/or stupid.
In some ways yes, in some ways no.
Other. (Please elaborate)
Early voting in Georgia. On the 20th of October this old Goldwater conservative voted against both Donald Trump and Hillary Clinton by casting my vote for Gary Johnson. Neither Trump or Clinton belong within a million miles of the Oval Office.
I'd say with confidence that the average elected official is brighter and more informed than the average citizen. It's often frustrating to laymen dumb down complex issues (comparing the economy to a household budget or balancing a checkbook) and insist that the general public would prove to be more competent in any given situation.
Politicians, especially all career politicians, are hucksters, greedy, power mad and for the most part treasonous liars. More than a few are loquacious speakers who are otherwise dumber than a lard bucket
Only the people who vote for incumbents are stupid and incompetent.
"When Faith preaches Hate, Blessed are the Doubters." - Amin Maalouf