I'm assuming you'd have to give a speech? your speech has to be different from everyone else's
the girl who become school captain in my grade was outwardly a very quiet person and somewhat invisible, you would expect someone more popular or present to gain all the votes but her speech was wow amazing seriously. if people didn't know her before then they definitely would know her + remember her after she gave her speech. it was quite the shock because she showed a side of her that barely anyone saw, so much humour and personality, so much wholesome literally everyone was awww'ing and giggling the whole time, no false promises but definitely some good promises made and they weren't overdone, emphasis of her speech was showing who she was rather than what she'd do for the school which is the route most other candidates take, so she hella stood out