Sometimes, peoplevote for someone they don’t like because they think that person is the best chance to win. It’s kind of like when you don't want to eat your favorite vegetable, but you still choose it because you know it will make you healthier, even if it doesn’t taste good right now.
The Big Picture
Imagine a race with three people: Alice, Bob, and Charlie. Alice is the one you don’t like, she’s loud and makes bad decisions. But you think Bob and Charlie are even worse, so you pick Alice because it's the best choice for you, even though you don’t like her much.