Dutch voters went to the polls Wednesday in a tightly contested snap election triggered when far-right leader Geert Wilders collapsed the previous coalition over immigration policy.

The campaign centered on migration and housing shortages, key issues also dividing Europe.

While Wilders’ Party for Freedom hopes to repeat its past success, most mainstream parties have ruled out working with him, citing his role in toppling the last government, NBC News has reported.

Center-left leader Frans Timmermans urged voters to back his alliance to block a new right-wing coalition.