Nomenclature
The relevant Polish legislation ("The Act of 23 January 2004 on Elections to the European Parliament") establishing the constituencies does not give the constituencies formal names. Instead, each constituency has a number, territorial description, and location of the Constituency Electoral Commission. The 2004 Polish National Election Commission and the 2004 European Parliament Election website uses the territorial description when referring to the constituency, not the electoral commission location.
Read more about this topic: Warsaw (European Parliament Constituency)