Here's my theory:
With some people, if they find something wrong with the decisions they made as a politician that immediately crosses them off their list.
Who is left?
Someone with no political record. They can make up their positions picking the decisions that turned out to be the most popular in the past.

I know someone who picked the winner of each Superbowl since it began. He is hoping ESPN will hire him. All they have to do is trust that he is telling the truth.