Gay Olympian Ian Thorpe weighs in on the Australian gay marriage debate.

SWIMMING great Ian Thorpe has had a spray at Canberra politicians berating them for not “doing their job” when it comes to same-sex marriage.

The Olympian, who came out as gay in 2014, told news.com.au he feared a “heated” debate in the run up to a postal plebiscite could see some young people struggling with their sexuality pushed further into the closet.

On Sunday, Thorpe threw his weight behind the campaign for a yes vote for same-sex marriage. Joined by his partner Ryan Channing, he headed down to Sydney’s City2Surf fun run to encourage people to ensure their details were current on the electoral roll.