The split effectively ended the realistic electoral chances of the Irish Unionist Alliance in southern Ireland. The results of the 1920 Irish local elections show that unionist support was strongest in urban areas. As the partition of Ireland became more likely, Southern Unionists formed numerous political movements in an attempt to find a solution to the "Irish Question". Among these were Irish Dominion League and the Irish Centre Party. As such, the southern rump of the IUA became increasingly fractured and in 1922 it lost its reason to exist with the establishment of the Irish Free State. Leading unionist figures, such as the Earl of Midleton, Lord Dunraven, James Campbell and Horace Plunkett were appointed in December 1922 by W. T. Cosgrave to the Free State's first Senate. Amongst others, Horace Plunkett's home in County Dublin was then burnt down during the Irish Civil War (1922–23) because of his involvement in the Irish Senate. The IUA helped form the Southern Irish Loyalist Relief Association to assist war refugees and claim compensation for damage to property. From 1921 IUA voters began to support the mainstream Cumann na nGaedheal party.