Acton (6 precincts), Andover (9 precincts), Ayer (2 precincts), Berlin (1 precinct), Billerica (11 precincts), Bolton (1 precinct), Boxborough (1 precinct), Carlisle (1 precinct), Chelmsford (9 precincts), Concord (5 precincts), Dracut (10 precincts), Dunstable (1 precinct), Groton (3 precincts), Harvard (1 precinct), Haverhill (21 precincts), Hudson (7 precincts), Lancaster (2 precincts), Lawrence (24 precincts), Littleton (3 precincts), Lowell (33 precincts), Maynard (4 precincts), Methuen (12 precincts), Shirley (1 precinct), Stow (1 precinct), Sudbury (5 precincts), Tewksbury (8 precincts), Tyngsborough (4 precincts), Wayland (3 precincts), Westford (6 precincts)