Technically, it's the fault of the voters for hiring an incompetent person and their responsibility to fire him.
I'm guessing you don't live in the US, because there are a lot of people who believe this is true, and it's a constant struggle for people to have to deal with stupid issues like this over actual issues of substance.
Ask instead "how many US citizens KNOW the earth is less than 10,000 years old?" and the answer will be a smaller number.