Seselja to abstain on gay marriage vote

Liberal frontbencher Zed Seselja insists he won't frustrate the result if Australians vote for marriage equality - he just won't support it in parliament.

Liberal Senator Zed Seselja says he will abstain from voting on same-sex marriage in parliament. (AAP)

New coalition frontbencher Zed Seselja says he will abstain from voting on same-sex marriage in parliament, even if Australians backed a change to the Marriage Act in a national vote.

But Senator Seselja insists he won't frustrate the result, insisting the verdict of voters in a plebiscite would be respected by parliament.

"If the Australian people vote in favour of same-sex marriage, it will sail through the parliament," he told ABC radio on Wednesday.

He later denied conservatives in the Liberal Party would seek to delay a plebiscite, insisting it was government policy.

"The only people that seem opposed to that policy of putting it to the people are the Labor Party and the Greens," he told Sky News.

"So really the question for them is, will they support it through the parliament?"