51 percent of Britons think the government should go ahead with its plans to allow gay and straight couples equal access to civil marriage.
The figure is according to a YouGov poll for the Sunday Times.
Only 35 percent of those polled thought the government should drop the proposals to allow gay couples to marry in civil ceremonies, 14 percent said they did not know.
The poll showed support to be highest among Liberal Democrat voters, of whom 67 percent thought the Coalition government should go ahead with the plan. 62 percent of Labour voters and 39 percent of Conservatives thought the government should not abandon the proposals.
Support was generally higher among women and respondents based in London and Scotland.
The most opposition was found among those aged over 60, of whom 54 percent thought the plan should be abandoned. In line with previous polls, younger people were more in favour of marriage equality with 69 percent of those ages 25 to 39 in favour.
50 percent said the government should go ahead with reforms of the House of Lords and 59 percent on a referendum about the UK’s membership of the EU.
62 percent said it should keep plans to replace the Human Rights Act with a British Bill of Rights.
YouGov polled 1663 adults from 10-11 May.
Other recent polls have found 56 percent of MPs believe that civil marriage equality will become law, and that the same proportion of voters, 56 percent, said support for marriage equality was not enough to sway them to or from a party.