Consists of the following towns:

Boston (Ward 1; Ward 2; Ward 3; Ward 4; Ward 5 - Precincts 1, 2, 10, 11; Ward 7 - Precinct 10; Ward 8; Ward 9; Ward 10 - Precincts 1-8; Ward 11 - Precincts 1-8, 10; Ward 12; Ward 13 - Precincts 1, 2, 4,-6, 8, 9; Ward 14; Ward 15; Ward 16 - Precincts 1, 3, 4, 6; Ward 17 - Precincts 1-12, 14; Ward 18 - Precincts 1-8, 11-15, 21, 21; Ward 19 - Precincts 7, 11; Ward 21 Precincts 1, 2), Chelsea, Lynn, Revere, Somerville, Winthrop.