At my school Im running for Treasurer any advice on how to win?

Question

It really important

Answer 1

Tell your classmates how much you care about improving your school, If your sincere they will like that

Answer 2

Come up with a catch phrase that people will associate with you.  Make posters that are bright in color and make flyers to pass out.  Maybe even bake cookies to "bribe" them to vote for you.