Electoral districts of Poland (, ()) are defined by Polish election law. 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. List of Sejm constituencies Source: List of Senate constituencies Source: List of European Parliament constituencies Source: The numbers of elected MEPs in districts may change every election, because to European Parliament are elected 51 persons (52 after brexit) with the highest score in the country. See also Administrative division of Poland Elections in Poland Poland Poland politics-related lists