The UK Telegraph:

The majority of Conservative MPs believe David Cameron’s same-sex marriage plan is doomed to failure and is a source of deep concern for their constituents.

An all-party poll of MPs found only 56 per cent believed the proposal to legalise same-sex marriage would succeed, with 41 per cent of Conservatives believing it. Almost as many Tory MPs (37 per cent) believed the proposal will fail and 22 per cent said they were unsure, the survey carried out by ComRes found.

It means that three out of five Tory MPs have doubts that the plan will go ahead. By contrast, more than two thirds of Labour MPs and almost all Liberal ­Democrat members polled were confident that it would go ahead.

The poll also found that 60 per cent of MPs did not think that the policy was of “significant importance” to their constituents. Among Tory MPs the proportion rose to 69 per cent.