Evidence from Ireland indicates that this form of vote management has been attempted on a number of occasions. To work, vote equalization requires accurate information about voting intentions and party strengths and also the active cooperation of the voters themselves. If a party misjudges the situation a vote equalization strategy can go badly wrong. For example, in the 2003 elections to the Northern Ireland Assembly, a vote management strategy by Sinn Féin in West Belfast intended to replace a Social Democratic and Labour Party member with a Sinn Féin member led instead to the election of a member of the Democratic Unionist Party, a party extremely hostile to Sinn Féin.