Electoral districts of Poland (Polish: okręgi wyborcze, okręg wyborczy (sg.))Electoral districts can be divided depending on whether they are individual entities or parts of a larger electoral district with regard to elections to 1) parliament (Sejm) and Senate 2) local offices and 3) European Parliament.Each district has a number of mandates calculated on the basis of its population.National Electoral Commission (Poland).National Electoral Commission (Poland).