David Cameron warned Lords will 'massacre' gay marriage laws Lord Carey, the former Archbishop, said here was a real possibility that the bill could be defeated in the Lords. "I think it makes a mockery of the Government's attempt to consult and then review in the light of that consultation," he said. Bearing in mind that so many Conservative MPs are unhappy about this, it seems to be madness on the part of the Government to rush through in this kind of way - this is not wisdom. I think it is very hard to gauge how the House of Lords will vote on this. Many will go with the Government on the equality aspect but my guess is that there will be a fair number of Conservatives and a fair number of cross-benchers with a few Labour to make it a very interesting debate. And I hope that the House of Lords, which is known to question Commons procedure, may take a different view, I think it could be defeated. Mark Pritchard, a Conservative MP for The Wrekin, urged to Mr Cameron to hear the "alarm bells" of discontent from the Tory grassroots, comparing it to discontent about his failure to call an EU referendum. "Same-sex marriage Bill will undo much of the good outreach work the Party has done with Muslim, Sikh, and Hindu communities," he added. His colleague, Mr Jackson, predicted the new laws will be defeated in the House of Lords as the Prime Minister will not be able to force through legislation. By convention, governments can only use the Parliament Act to overrule peers if the new law relates to a policy that was included in their election pledges. The Conservatives only pledged to "consider" it in their equality manifesto. To add to the fury of many Tory MPs, Mr Cameron has stalled over tax breaks for married couples, which was in the Conservative manifesto. Mr Jackson wrote on Twitter: "Gay marriage bill will be massacred in the Lords and [the Government] can't use Parliament Act as it wasn't in manifesto. Arrogant Cameron knows best. Bob Blackman, MP for Harrow East, predicted "outrage throughout the country" about the new developments. He told BBC News: "For the majority of our supporters out in the country, marriage is between one man and one woman. And so changes to the definition of marriage are not appreciated and I think are not strongly supported.