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Grieve said that there did not currently appear to be parliamentary support for a fresh referendum, but suggested May could be left with few other options if parliament rejected the deal. May's Conservatives are propped up in parliament by Northern Ireland's Democratic Unionist party, but there remains a distinct possibility that an unlikely alliance of hardline Brexiteers and Remainers could oppose the final deal and defeat the prime minister in parliament. May plans to bring back a deal from Brussels in the autumn, which parliament will then need to approve by a majority vote. Grieve has been dubbed the " rebel commander" of pro-Remain Conservative MPs, and helped to inflict a major Commons defeat on Theresa May in December when he backed an amendment to her flagship European Union Withdrawal Bill over parliament's right to a "meaningful vote" on the Brexit deal. Account icon An icon in the shape of a person's head and shoulders.
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