On May 22nd residents of Ireland, north and south, will vote on the peace deal for a new political settlement to the 'troubles' in Northern Ireland. Polls predict it will pass, and clearly this will mean an historic breakthrough for the province and the best chance of peace for thirty years. George Negus follows the campaigns of the major players in the north prior to the referendum.The battle for the Unionist vote will be fought between the mainstream Ulster Unionists, led by David Trimble, who support the deal, and the Democratic Unionist Party, led by Ian Paisley, who maintains his passion against any deal with the Republicans. On the republican side the deal is a personal triumph for the leader of the SDLP, John Hume, who for the last thirty years has pursued a non-violent, negotiated settlement. This has often cost him the support of many in the Republican camp who have drifted to the hard line pursued by Sinn Fein, led by Gerry Adams. Negus assesses the likely outcome of the referendum and whether a shift in support between the hardliners and the moderates on both sides will affect the chances of success in the implementation stage.