Sinodinos backs Libs gay conscience vote

Senior Liberal Arthur Sinodinos has put his support behind the coalition having a conscience vote on same sex marriage.

The issue is back in the spotlight after Deputy Labor leader Tanya Plibersek called on her party to impose a binding vote on its federal MPs, a stance her colleague David Feeney disagrees with.

When asked for his opinion on whether a conscience vote on gay marriage should apply to Liberals, Senator Sinodinos told Sky News on Wednesday: "I think we should, I think you'll get a truer test of the feeling within the parliament."