Following the St Andrews Agreement and the Assembly election in 2007, as Sinn Féin's political leader in the North, he became deputy First Minister of Northern Ireland on 8 May 2007, with the Democratic Unionist Party (DUP) leader Ian Paisley becoming First Minister.
Despois do acordo de San Andrews e a elección de Asemblea en 2007, como dirixente político de Sinn Féin no norte, converteuse en viceministro principal de Irlanda do Norte en 8 maio 2007, sendo o líder do Partido Unionista Democrático (DUP) Ian Paisley que se converteu en Primeiro Ministro.