Imagine you are playing a game with your friends, and you are supposed to choose a leader. But you want to make sure that every player has an equal say in the matter, even if some players are bigger or smarter than others. One way to do this is to make a rule that each player gets only one vote. That means that no matter who you are or what you can do, your vote counts the same as everyone else's. This is what "one man, one vote" means. It is a way to make sure that everyone has a fair and equal say in choosing the leader, without anyone being able to dominate or bully others. This is an important principle in many countries, where people have the right to vote and choose their leaders in democratic elections. It helps to make sure that everyone's voice is heard and that no one is left out or oppressed.