District 1 – Senator Troy D. Jackson (D-Aroostook)
District 2 – Senator Harold “Trey” L. Stewart, III (R-Aroostook)
District 3 – Senator Bradlee T. Farrin (R-Somerset)
District 4 – Senator Stacey K. Guerin (R-Penobscot)
District 5 – Senator Russell J. Black (R-Franklin)
District 6 – Senator Marianne Moore (R-Washington)
District 7 – Senator Nicole C. Grohoski (D-Hancock)
District 8 – Senator Michael Tipping (D-Penobscot)
District 9 – Senator Joseph M. Baldacci (D-Penobscot)
District 10 – Senator Peter A. Lyford (R-Penobscot)
District 11 – Senator Glenn “Chip” Curry (D-Waldo)
District 12 – Senator Pinny H. Beebe-Center (D-Knox)
District 13 – Senator Cameron D. Reny (D-Lincoln)
District 14 – Senator Craig V. Hickman (D-Kennebec)
District 15 – Senator Matthew G. Pouliot (R-Kennebec)
District 16 – Senator David P. LaFountain (D-Kennebec)
District 17 – Senator Jeffrey L. Timberlake (R-Androscoggin)
District 18 – Senator Richard A. Bennett (R-Oxford)
District 19 – Senator Lisa M. Keim (R-Oxford)
District 20 – Senator Eric L. Brakey (R-Androscoggin)
District 21 – Senator Margaret “Peggy” R. Rotundo (D-Androscoggin)
District 22 – Senator James D. Libby (R-Cumberland)
District 23 – Senator Matthea E.L. Daughtry (D-Cumberland)
District 24 – Senator Eloise A. Vitelli (D-Sagadahoc)
District 25 – Senator Theresa S. Pierce (D-Cumberland)
District 26 – Senator Timothy E. Nangle (D-Cumberland)
District 27 – Senator Jill C. Duson (D-Cumberland)
District 28 – Senator Benjamin M. Chipman (D-Cumberland)
District 29 – Senator Anne M. Carney (D-Cumberland)
District 30 – Senator Stacy F. Brenner (D-Cumberland)
District 31 – Senator Donna Bailey (D-York)
District 32 – Senator Henry L. Ingwersen (D-York)
District 33 – Senator Matthew A. Harrington (R-York)
District 34 – Senator Joseph E. Rafferty (D-York)
District 35 – Senator Mark W. Lawrence (D-York)