The most vocal opponents of same sex marriage in the federal Liberal Party are Tony Abbott, Eric Abetz, Craig Kelly, Zed Seselja and Peter Dutton. In 2016 Buzzfeed named the ‘dirty dozen’ MPs with the worst record on climate science and policy.[1] Of the Liberal MPs still in parliament Buzzfeed named Tony Abbott, Eric Abetz, Craig Kelly, Zed Seselja and Peter Dutton.

Until he left the party Cory Bernardi was implacably opposed to same sex marriage and one of its most hardened climate science deniers. If we extend to the National Party, we find Barnaby Joyce and George Christensen are two of the strongest opponents of same sex marriage and two of the strongest critics of climate action.