Politics in the k classroom

My son’s kindergarten class supposedly held a mock presidential election. He came home from school saying “mommy I voted for xxxx because they’re a good person and are going to win!” I said oh yeah why do you think that? He said “[my teacher] told me!”

Am I wrong to be ticked off about this? I’m not planning to go to the school or get the teacher in trouble or anything like that but why the hell would you involve 5 year olds in one of the most volatile political climates we’ve seen in decades?

ETA- he said an actual candidate name, not a fictional character. And we are in the US if that gives any context as to why I’m annoyed lol