An exit poll released after Poland’s local and regional elections on Sunday showed Prime Minister Donald Tusk’s pro-EU party trailing the conservative opposition party that governed Poland for eight years until December. But the socially liberal mayor of Warsaw, a Tusk ally, easily won another term in the capital. Sunday’s elections were the first electoral test for Tusk’s coalition government nearly four months since it took power. Poles voted for mayors, local councilors and representatives to the nation’s 16 regional assemblies. The exit polls have a small margin of error and final results …