The party's electoral basin was in Romania's "new regions", with only a slim presence in the Old Kingdom: some 40% of its total voters were from Transylvania, where over 70% of the emancipated Jewish population voted PER. Its main competitor was the Magyar Party, which took away votes from Hungarian-assimilated Jews; Jews from the less Magyarized zones, in particular Maramureș, were predominantly PER voters. In the east, Landau's Bessarabian constituency, comprising some of the poorest and least integrated sections of Romanian Jews, provided the PER with its other main electoral resource.