Original: Party Group Northern Ireland TUVJim Allister was elected as a member of the Democratic Unionist Party , but resigned the party whip on 27 March , 2007 in protest over the party 's decision to form a power-sharing executive in the Northern Ireland Assembly with Sinn Féin .
Simplified: European Party Group Jim Allister was as a member of the Democratic Unionist Party , but left on 27 March 2007 after they made a power-sharing executive in the Northern Ireland Assembly with Sinn Féin .