Our Canberra reporter John Barrington has declared a 60-20-20 split between electorates that are against same-sex marriage; for same-sex marriage; and those divided on the issue.

Coalition held seats like Hinkler in Queensland and Gippsland in Victoria are against same sex marriage, along with the Labor seat of Fowler in western Sydney and Independent Rob Oakeshott’s seat of Lyne on the mid-north coast of New South Wales.

Former Opposition Leader Malcolm Turnbull’s seat of Wentworth in Sydney’s eastern suburbs is strongly in favour of same-sex marriage, along with Labor MP Andrew Leigh’s seat of Fraser in the ACT.