2 left-wing candidates ran for president of the Student Federation of Universidad de Chile in 2011.
One candidate was Gabriel Boric, law student, member of the Autonomous Left. He innaugurated today as the president of Chile.
The other candidate was Camila Vallejo, geography student, member of the Communist Party. She is the Secretary of Government of Boric's government now.
The actual result in 2011 was
Gabriel Boric: 4053 votes
Camila Vallejo: 3864 votes
I found a BBC article (in Spanish) written in 2011 about this election
https://www.bbc.com/mundo/noticias/2011/12/111207_camila_vallejo_derrotada_jgc