Kakistocratic
Like George W. Bush, but even worse. A kakistocrat is the kind of person who gets elected just to make everyone else mad.
George W. Bush was a kakistocrat. He started a war and then said it was a good idea.
My cousin ran for mayor and was a kakistocrat. He promised free pizza and then didn't deliver.
My teacher is a kakistocrat. She failed everyone just because she was tired.