| House 1st Barnstable | Cleon H. Turner (D) 56.8% | Patrick J. Foran (R) 43.2% | |
| House 1st Berkshire | Gailanne Cariddi (D) 99.4% | Unopposed | |
| House 1st Bristol | Fred Jay Barrows (R) 99.6% | Unopposed | |
| House 1st Essex | Michael A. Costello (D) 65.1% | Valentino James Troyli (R) 34.9% | |
| House 1st Franklin | Stephen Kulik (D) 99.7% | Unopposed | |
| House 1st Hampden | Todd Smola (R) 99.2% | Unopposed | |
| House 1st Hampshire | Peter Kocot (D) 99.4% | Unopposed | |
| House 1st Middlesex | Sheila Harrington (R) 62.5% | Jesse Reich (D) 37.5% | |
| House 1st Norfolk | Bruce Ayers (D) 98.1% | Unopposed | |
| House 1st Plymouth | Vinny deMacedo (R) 99.1% | Unopposed | |
| House 1st Suffolk | Carlo Basile (D) 96.9% | Unopposed | |
| House 1st Worcester | Kim Ferguson (R) 57.9% | Kenneth John O'Brien (D) 31.3%, Jonathan B. Long (Undeclared) 10.8% | |
| House 2nd Barnstable | Demetrius J. Atsalis (D) 59% | James F. Munafo, Jr. (R) 41% | |
| House 2nd Berkshire | Paul Mark (D) 54.4% | Michael F. Case (R) 34.4%, Stefan G. Racz (I) 11.2% | |
| House 2nd Bristol | George T. Ross (R) 48.6% | Bill Bowles (D) 44.2%, James S. Connolly (I) 7.1% | Flipped D to R; Incumbent defeated |
| House 2nd Essex | Harriett L. Stanley (D) 51.8% | Robert D. Finneran (R) 48.1% | |
| House 2nd Franklin | Denise Andrews (D) 52.5% | Steven E. Adam (R) 42.3%, Genevieve C. Fraser (I) 5.1% | |
| House 2nd Hampden | Brian Ashe (D) 51.3% | Marie Angelides (R) 48.6% | |
| House 2nd Hampshire | John Scibak (D) 99% | Unopposed | |
| House 2nd Middlesex | Jim Arciero (D) 98.8% | Unopposed | |
| House 2nd Norfolk | Tackey Chan (D) 51.9% | John M. Iredale (R) 31.9%, Karl Roos (I) 16.1% | |
| House 2nd Plymouth | Susan Gifford (R) 66.1% | David Smith (D) 33.9% | |
| House 2nd Suffolk | Eugene O'Flaherty (D) 97.9% | Unopposed | |
| House 2nd Worcester | Richard M. Bastien (R) 43.3% | Patrick M. Gerry (D) 40.2%, Colleen O'Neil-Laperriere (Undeclared) | Flipped D to R |
| House 3rd Barnstable | Dave Vieira (R) 53.9% | Matthew C. Patrick (D) 46% | Flipped D to R; Incumbent defeated |
| House 3rd Berkshire | Christopher N. Speranzo (D) 55% | Mark C. Miller (G) 45% | |
| House 3rd Bristol | Shaunna O'Connell (R) 50.1% | James H. Fagan (D) 49.9% | Flipped D to R; Incumbent defeated |
| House 3rd Essex | Brian Dempsey (D) 100% | Unopposed | |
| House 3rd Hampden | Nick Boldyga (R) 39.7% | Rosemary Sandlin (D) 39.1%, Anthony C. Bonavita (I) 21.1% | Flipped D to R; Incumbent defeated |
| House 3rd Hampshire | Ellen Story (D) 77.4% | Daniel M. Sandell (R) 18.6%, Daniel Edward Mellick (I) 3.9% | |
| House 3rd Middlesex | Kate Hogan (D) 60% | Chuck S. Kuniewich, Jr. (I) 39.9% | |
| House 3rd Norfolk | Ronald Mariano (D) 63.6% | Gary M. Lowell (I) 36.2% | |
| House 3rd Plymouth | Garrett J. Bradley (D) 60.5% | Timothy F. Finnerty (R) 37%, Carlton A. Chambers (I) 2.5% | |
| House 3rd Suffolk | Aaron Michlewitz (D) 97.7% | Unopposed | |
| House 3rd Worcester | Stephen L. DiNatale (D) 99.2% | Unopposed | |
| House 4th Barnstable | Sarah Peake (D) 62.9% | David M. Dunford (R) 34.1%, James W. Feeney (I) 3.1% | |
| House 4th Berkshire | William Pignatelli (D) 81.8% | Lee Scott Laugenour (R) 18% | |
| House 4th Bristol | Steven Howitt (R) 54.4% | Steven J. D'Amico (D) 45.5% | Flipped D to R; Incumbent defeated |
| House 4th Essex | Bradford Hill (R) 99.6% | Unopposed | |
| House 4th Hampden | Donald F. Humason, Jr. (R) 99.3% | Unopposed | |
| House 4th Middlesex | Steven L. Levy (R) 50.3% | Danielle Gregoire (D) 49.6% | Flipped D to R; Incumbent defeated |
| House 4th Norfolk | James Michael Murphy (D) 62.1% | Douglas R. Ness (R) 31.5%, Robert Montgomery Thomas (I) 6.4% | |
| House 4th Plymouth | James Cantwell (D) 98.8% | Unopposed | |
| House 4th Suffolk | Nick Collins (D) 73.1% | Patrick Brennan (R) 26.6% | |
| House 4th Worcester | Dennis Rosa (D) 99.6% | Unopposed | |
| House 5th Barnstable | Randy Hunt (R) 53% | Lance William Lambros (D) 46.9% | |
| House 5th Bristol | Patricia Haddad (D) 98.8% | Unopposed | |
| House 5th Essex | Ann-Margaret Ferrante (D) 65.1% | Janet Anne Holmes (R) 34.8% | |
| House 5th Hampden | Michael F. Kane (D) 99.4% | Unopposed | |
| House 5th Middlesex | David Linsky (D) 98.9% | Unopposed | |
| House 5th Norfolk | Mark Cusack (D) 58.6% | Paul Clifford (I) 41.2% | |
| House 5th Plymouth | Rhonda Nyman (D) 52.5% | Korey M. Welch (R) 46.8% | |
| House 5th Suffolk | Carlos Henriquez (D) 87.6% | Barry Lawton (D) 4.4% | |
| House 5th Worcester | Anne Gobi (D) 65.4% | Rodney Arvid Josephson (R) 34.6% | |
| House 6th Bristol | David B. Sullivan (D) 63.6% | David Rose (R) 36.4% | |
| House 6th Essex | Jerry Parisella (D) 60.3% | Brett R. Schetzsle (R) 39.7% | |
| House 6th Hampden | Mike Finn (D) 54.6% | Gregory C. Neffinger (R) 45.4% | |
| House 6th Middlesex | Chris Walsh (D) 69.8% | James M. Pillsbury (I) 20.5%, Jim M. Rizoli (I) 9.4% | |
| House 6th Norfolk | William C. Galvin (D) 99.2% | Unopposed | |
| House 6th Plymouth | Daniel K. Webster (R) 51.3% | Josh Cutler (D) 48.6% | |
| House 6th Suffolk | Russell Holmes (D) 98.7% | Unopposed | |
| House 6th Worcester | No winner recorded | Peter Durant (R) 50%, Geraldo Alicea (D) 50% | Incumbent defeated |
| House 7th Bristol | Kevin Aguiar (D) 75.2% | C.J. Ferry (R) 24.7% | |
| House 7th Essex | John Keenan (D) 99% | Unopposed | |
| House 7th Hampden | Thomas Petrolati (D) 97.4% | Unopposed | |
| House 7th Middlesex | Tom Sannicandro (D) 63.7% | David S. Mercer (R) 36.2% | |
| House 7th Norfolk | Walter F. Timilty, Jr. (D) 98.6% | Unopposed | |
| House 7th Plymouth | Geoff Diehl (R) 51.2% | Allen J. McCarthy (D) 48.7% | Flipped D to R; Incumbent defeated |
| House 7th Suffolk | Gloria L. Fox (D) 98.7% | Unopposed | |
| House 7th Worcester | Paul Frost (R) 99.4% | Unopposed | |
| House 8th Bristol | Paul Schmid III (D) 67.6% | F. George Jacome (I) 32.3% | |
| House 8th Essex | Lori Ehrlich (D) 61.9% | Katherine Kozitza (R) 38% | |
| House 8th Hampden | Joseph Wagner (D) 97.8% | Unopposed | |
| House 8th Middlesex | Carolyn Dykema (D) 71.2% | Jonathan A. Loya (I) 28.7% | |
| House 8th Norfolk | Louis Kafka (D) 98.5% | Unopposed | |
| House 8th Plymouth | Angelo D'Emilia (R) 52.8% | Patricia Lawton (D) 47.1% | Flipped D to R |
| House 8th Suffolk | Martha Walz (D) 77.2% | Brad Marston (R) 22.7% | |
| House 8th Worcester | Kevin Kuros (R) 57.2% | Paul Kujawski (D) 42.7% | Flipped D to R; Incumbent defeated |
| House 9th Bristol | Christopher Markey (D) 53.7% | Joe Michaud (R) 40.8%, Russel Protentis (I) 5.4% | |
| House 9th Essex | Donald Wong (R) 51% | Mark V. Falzone (D) 48.9% | Flipped D to R; Incumbent defeated |
| House 9th Hampden | Sean Curran (D) 80.1% | Robert Underwood (I) 19.5% | |
| House 9th Middlesex | Thomas M. Stanley (D) 98.4% | Unopposed | |
| House 9th Norfolk | Daniel B. Winslow (R) 67.5% | Stanley J. Nacewicz (D) 32.4% | |
| House 9th Plymouth | Michael D. Brady (D) 99.6% | Unopposed | |
| House 9th Suffolk | Byron Rushing (D) 98% | Unopposed | |
| House 9th Worcester | George N. Peterson, Jr. (R) 67.4% | Timothy A. Dodd (D) 32.6% | |
| House 10th Bristol | William Straus (D) 57.2% | Peter F. Winters (R) 42.7% | |
| House 10th Essex | Robert Fennell (D) 95.5% | Unopposed | |
| House 10th Hampden | Cheryl Rivera (D) 97.2% | Unopposed | |
| House 10th Middlesex | Peter J. Koutoujian (D) 73.7% | James Jay Dixon (R) 26.2% | |
| House 10th Norfolk | James E. Vallee (D) 97.5% | Unopposed | |
| House 10th Plymouth | Christine E. Canavan (D) 56.1% | John Cruz (R) 43.8% | |
| House 10th Suffolk | Edward Coppinger (D) 98.3% | Unopposed | |
| House 10th Worcester | John V. Fernandes (D) 98% | Unopposed | |
| House 11th Bristol | Robert Koczera (D) 66.6% | Ivo M. Almeida (R) 33.3% | |
| House 11th Essex | Steven M. Walsh (D) 98.5% | Unopposed | |
| House 11th Hampden | Benjamin Swan (D) 96.1% | Unopposed | |
| House 11th Middlesex | Kay Khan (D) 98.4% | Unopposed | |
| House 11th Norfolk | Paul McMurtry (D) 98.6% | Unopposed | |
| House 11th Plymouth | Geraldine Creedon (D) 57.5% | Kristine Abrams (R) 42.5% | |
| House 11th Suffolk | Elizabeth Malia (D) 98.4% | Unopposed | |
| House 11th Worcester | Matthew A. Beaton (R) 60.8% | Kevin T. Byrne (D) 39.2% | |
| House 12th Bristol | Stephen R. Canessa (D) 98.4% | Unopposed | |
| House 12th Essex | Joyce A. Spiliotis (D) 59.5% | Martin J. Scafidi (R) 40.3% | |
| House 12th Hampden | Angelo Puppolo (D) 64.8% | Joshua Carpenter (R) 35.2% | |
| House 12th Middlesex | Ruth Balser (D) 98.4% | Unopposed | |
| House 12th Norfolk | John Rogers (D) 53.7% | James M. Stanton (R) 46.2% | |
| House 12th Plymouth | Thomas J. Calter, III (D) 54.5% | Joseph Truschelli (R) 45.4% | |
| House 12th Suffolk | Linda Dorcena Forry (D) 98.5% | Unopposed | |
| House 12th Worcester | Harold P. Naughton, Jr. (D) 60.8% | James F. Gettens (R) 39.1% | |
| House 13th Bristol | Tony Cabral (D) 98.4% | Unopposed | |
| House 13th Essex | Theodore Speliotis (D) 51.4% | Daniel C. Bennett (R) 48.5% | |
| House 13th Middlesex | Thomas P. Conroy (D) 97.7% | Unopposed | |
| House 13th Norfolk | Denise Garlick (D) 55.3% | John T. O'Leary (R) 44.6% | |
| House 13th Suffolk | Martin J. Walsh (D) 98.2% | Unopposed | |
| House 13th Worcester | John Mahoney (D) 55.5% | Paul J. Franco (R) 35.2%, Ronald C. Madnick (I) 7.7% | |
| House 14th Bristol | Elizabeth Poirier (R) 99.4% | Unopposed | |
| House 14th Essex | David M. Torrisi (D) 52.5% | Kevin J. Begley (R) 47.3% | |
| House 14th Middlesex | Cory Atkins (D) 58.8% | K.c. Winslow (I) 41.1% | |
| House 14th Norfolk | Alice Peisch (D) 61.2% | Royall H. Switzler (R) 38.8% | |
| House 14th Suffolk | Angelo Scaccia (D) 98.2% | Unopposed | |
| House 14th Worcester | Jim O'Day (D) 97.1% | Unopposed | |
| House 15th Essex | Linda Dean Campbell (D) 52.1% | Al DiNuccio (R) 37.8%, Philip J. Lahey, Jr. (I) 8.8% | |
| House 15th Middlesex | Jay R. Kaufman (D) 99.1% | Unopposed | |
| House 15th Norfolk | Frank Smizik (D) 99.5% | Unopposed | |
| House 15th Suffolk | Jeffrey Sanchez (D) 98.5% | Unopposed | |
| House 15th Worcester | Vincent A. Pedone (D) 97.4% | Unopposed | |
| House 16th Essex | Marcos Devers (D) 82.4% | Enrique Matos (R) 14.81%, Rafael Gadea (I) 2.8% | |
| House 16th Middlesex | Thomas A. Golden, Jr. (D) 98.9% | Unopposed | |
| House 16th Suffolk | Kathi-Anne Reinstein (D) 98.5% | Unopposed | |
| House 16th Worcester | John P. Fresolo (D) 97.1% | Unopposed | |
| House 17th Essex | Paul L. Adams (R) 54.2% | Patricia A. Commane (D) 45.6% | Flipped D to R |
| House 17th Middlesex | David Nangle (D) 99.3% | Unopposed | |
| House 17th Suffolk | Kevin Honan (D) 97.7% | Unopposed | |
| House 17th Worcester | John J. Binienda, Sr. (D) 97.6% | Unopposed | |
| House 18th Essex | James J. Lyons, Jr. (R) 53.2% | Barbara L'Italien (D) 46.7% | Flipped D to R; Incumbent defeated |
| House 18th Middlesex | Kevin J. Murphy (D) 99.6% | Unopposed | |
| House 18th Suffolk | Michael J. Moran (D) 97.6% | Unopposed | |
| House 18th Worcester | Ryan Fattman (R) 52.5% | Jennifer M. Callahan (D) 47.4% | Flipped D to R; Incumbent defeated |
| House 19th Middlesex | James Miceli (D) 63.5% | Mario S. Marchese (R) 36.3% | |
| House 19th Suffolk | Robert DeLeo (D) 97.5% | Unopposed | |
| House 20th Middlesex | Bradley Jones, Jr. (R) 99.3% | Unopposed | |
| House 21st Middlesex | Charles A. Murphy (D) 97.2% | Unopposed | |
| House 22nd Middlesex | Marc Lombardo (R) 50.5% | Kevin P. Conway (D) 34.2%, James F. O'Donnell, Jr. (D) 13.5% | Flipped D to R |
| House 23rd Middlesex | Sean Garballey (D) 98.3% | Unopposed | |
| House 24th Middlesex | William N. Brownsberger (D) 77.5% | Lalig Musserian (I) 22.3% | |
| House 25th Middlesex | Alice K. Wolf (D) 99.2% | Unopposed | |
| House 26th Middlesex | Timothy J. Toomey, Jr. (D) 98.6% | Unopposed | |
| House 27th Middlesex | Denise Provost (D) 98% | Unopposed | |
| House 28th Middlesex | Stephen Stat Smith (D) 63.9% | Dennis John Giantassio (I) 35.9% | |
| House 29th Middlesex | Jonathan Hecht (D) 98.6% | Unopposed | |
| House 30th Middlesex | James Dwyer (D) 63.4% | Kara Marie Fratto (R) 36.5% | |
| House 31st Middlesex | Jason Lewis (D) 52.3% | George Georgountzos (R) 35.3%, Michael J. Rotondi (I) 12.4% | |
| House 32nd Middlesex | Paul Brodeur (D) 51.4% | David R. Lucas (R) 48.4% | |
| House 33rd Middlesex | Christopher G. Fallon (D) 98.3% | Unopposed | |
| House 34th Middlesex | Carl M. Sciortino, Jr. (D) 73.4% | Richard Cannava (I) 26.4% | |
| House 35th Middlesex | Paul J. Donato, Sr. (D) 76.2% | Karla Romero (I) 23.6% | |
| House 36th Middlesex | Colleen Garry (D) 53.8% | George Derek Boag (R) 35.9%, Matthew James Sheehan (I) 10.3% | |
| House 37th Middlesex | Jennifer Benson (D) 54.8% | Kurt Hayes (R) 45.2% | |
| House Barnstable, Dukes and Nantucket | Timothy R. Madden (D) 98.8% | Unopposed | Flipped I to D |
| Senate 1st Bristol and Plymouth | Michael Rodrigues (D) 62.1% | Derek A. Maksy (R) 37.8% | |
| Senate 1st Essex | Steven A. Baddour (D) 58.9% | Stephen R. Cole (R) 41% | |
| Senate 1st Essex and Middlesex | Bruce Tarr (R) 99.3% | Unopposed | |
| Senate 1st Hampden and Hampshire | Gale D. Candaras (D) 58.1% | Thomas A. McCarthy (R) 41.8% | |
| Senate 1st Middlesex | Eileen Donoghue (D) 54.5% | James J. Buba (R) 36.3%, Patrick O'Connor (I) 9.2% | |
| Senate 1st Middlesex and Norfolk | Cynthia Creem (D) 98.4% | Unopposed | |
| Senate 1st Plymouth and Bristol | Marc Pacheco (D) 58% | David W. Pottier (R) 41.9% | |
| Senate 1st Suffolk | John A. Hart, Jr. (D) 98.2% | Unopposed | |
| Senate 1st Suffolk and Middlesex | Anthony W. Petruccelli (D) 75% | Frank John Addivinola, Jr. (R) 24.9% | |
| Senate 1st Worcester | Harriette Chandler (D) 62.2% | William J. Higgins, Sr (R) 37.7% | |
| Senate 2nd Bristol and Plymouth | Mark Montigny (D) 98.9% | Unopposed | |
| Senate 2nd Essex | Frederick E. Berry (D) 61.5% | Richard A. Jolitz (R) 31.5%, Matthew J. Fraser (I) 7% | |
| Senate 2nd Essex and Middlesex | Barry Finegold (D) 53% | Jamison Tomasek (R) 41.6%, Jodi Oberto (I) 5.3% | |
| Senate 2nd Hampden and Hampshire | Michael R. Knapik (R) 99.1% | Unopposed | |
| Senate 2nd Middlesex | Patricia D. Jehlen (D) 67% | David M. Carnevale (R) 32.9% | |
| Senate 2nd Middlesex and Norfolk | Karen Spilka (D) 59.2% | Edward Bergin McGrath (R) 40.7% | |
| Senate 2nd Plymouth and Bristol | Thomas P. Kennedy (D) 98.8% | Unopposed | |
| Senate 2nd Suffolk | Sonia Chang-Diaz (D) 98.4% | Unopposed | |
| Senate 2nd Suffolk and Middlesex | Steven A. Tolman (D) 98.2% | Unopposed | |
| Senate 2nd Worcester | Michael O. Moore (D) 98.2% | Unopposed | |
| Senate 3rd Essex and Middlesex | Thomas McGee (D) 67.5% | Christopher Jordan Dent (R) 32.4% | |
| Senate 3rd Middlesex | Susan C. Fargo (D) 57% | Sandra B. Martinez (R) 43% | |
| Senate 4th Middlesex | Kenneth Donnelly (D) 98.2% | Unopposed | |
| Senate Berkshire, Hampshire and Franklin | Benjamin B. Downing (D) 99.4% | Unopposed | |
| Senate Bristol and Norfolk | James Timilty (D) 98.7% | Unopposed | |
| Senate Cape and Islands | Daniel A. Wolf (D) 57.4% | James H. Crocker, Jr. (R) 42.5% | |
| Senate Hampden | James Welch (D) 60.9% | Robert A. Magovern (R) 39% | |
| Senate Hampshire and Franklin | Stanley C. Rosenberg (D) 99.3% | Unopposed | |
| Senate Middlesex and Essex | Katherine M. Clark (D) 52.3% | Craig Spadafora (R) 47.6% | Flipped R to D |
| Senate Middlesex and Worcester | James B. Eldridge (D) 57.1% | George Thompson (R) 42.9% | |
| Senate Middlesex, Suffolk and Essex | Sal DiDomenico (D) 77.4% | Barbara T. Bush (R) 22.3% | |
| Senate Norfolk and Plymouth | John Keenan (D) 55.7% | Daniel M. Dewey (R) 34.5%, Laura Innis (I) 9.6% | |
| Senate Norfolk, Bristol and Middlesex | Richard J. Ross (R) 98.7% | Unopposed | |
| Senate Norfolk, Bristol and Plymouth | Brian A. Joyce (D) 62.9% | Robert E. Burr, Jr. (R) 37.1% | |
| Senate Plymouth and Barnstable | Therese Murray (D) 52.4% | Thomas Francis Keyes (R) 47.5% | |
| Senate Plymouth and Norfolk | Robert L. Hedlund, Jr. (R) 74.6% | Paul R. Kearney, Jr. (I) 25.3% | |
| Senate Suffolk and Norfolk | Michael F. Rush (D) 67.6% | Brad Williams (R) 32.2% | |
| Senate Worcester and Middlesex | Jennifer Flanagan (D) 58.9% | Neal Andrew Heeren (R) 41.1% | |
| Senate Worcester and Norfolk | Richard T. Moore (D) 53.5% | Kimberly B. Roy (R) 46.4% | |
| Senate Worcester, Hampden, Hampshire and Franklin | Stephen M. Brewer (D) 66.2% | Daniel D. Dubrule (R) 33.7% | |