A University of Waikato student has issued an apology over a line he used to win votes in his student union election.

Alex Winiata bragged in student rag Nexus Magazine that if he had one vote for every girl on this campus he's shagged, he would win easily.

Winiata, who works at a clothing store, made the comment in a Waikato Students' Union candidate profile.

He is running for election for one of eight student director positions on the union.

But his boast caused outrage in the university's student community

And he has since issued an apology on his Facebook page.