| House 1st Barnstable | Chris Flanagan (D) 53.4% | Tracy Post (R) 44.6%, Abraham Kasparian Jr. (I) 1.9% | Flipped R to D |
| House 1st Berkshire | John Barrett (D) 98.7% | Unopposed | |
| House 1st Bristol | Fred Jay Barrows (R) | Brendan A. Roche (D) 42.4% | |
| House 1st Essex | Dawne Shand (D) 59.6% | Charles Fitzwater (R) 40.3% | Flipped R to D |
| House 1st Franklin | Natalie Blais (D) 99% | Unopposed | |
| House 1st Hampden | Todd Smola (R) 98.4% | Unopposed | |
| House 1st Hampshire | Lindsay Sabadosa (D) 99.6% | Unopposed | |
| House 1st Middlesex | Margaret Scarsdale (D) 47.1% | Andrew Shepherd (R) 47.1%, Catherine Lundeen (I) 5.4% | Flipped R to D |
| House 1st Norfolk | Bruce Ayers (D) 98.2% | Unopposed | |
| House 1st Plymouth | Mathew Muratore (R) 57.7% | Stephen Michael Palmer (D) 42.2% | |
| House 1st Suffolk | Adrian Madaro (D) 97.7% | Unopposed | |
| House 1st Worcester | Kim Ferguson (R) 99.4% | Unopposed | |
| House 2nd Barnstable | Kip Diggs (D) 62.1% | William Buffington Peters (R) 37.8% | |
| House 2nd Berkshire | Tricia Farley-Bouvier (D) 99.3% | Unopposed | |
| House 2nd Bristol | Jim Hawkins (D) 60.5% | Steven Escobar (R) 39.4% | |
| House 2nd Essex | Kristin Kassner (D) 50% | Leonard Mirra (R) 50% | Flipped R to D; Incumbent defeated |
| House 2nd Franklin | Susannah Whipps (I) 63.42% | Jeffrey Raymond (R) 31.67%, Kevin McKeown (I) 4.76% | |
| House 2nd Hampden | Brian Ashe (D) 97.5% | Unopposed | |
| House 2nd Hampshire | Daniel Carey (D) 98.7% | Unopposed | |
| House 2nd Middlesex | Jim Arciero (D) 64.8% | Raymond Xie (R) 35.1% | |
| House 2nd Norfolk | Tackey Chan (D) 70.5% | Sharon Cintolo (R) 29.4% | |
| House 2nd Plymouth | Susan Gifford (R) 98.4% | Unopposed | |
| House 2nd Suffolk | Danny Ryan (D) 98.6% | Unopposed | |
| House 2nd Worcester | Jon Zlotnik (D) 53.5% | Bruce Chester (R) 46.5% | |
| House 3rd Barnstable | Dave Vieira (R) 55.4% | Kathleen Fox Alfano (D) 44.6% | |
| House 3rd Berkshire | William Pignatelli (D) 90.04% | Michael Lavery (G) 9.36% | |
| House 3rd Bristol | Carol Doherty (D) 57% | Christopher Coute (R) 43% | |
| House 3rd Essex | Andy Vargas (D) 96% | Unopposed | |
| House 3rd Hampden | Nick Boldyga (R) 60% | Anthony Russo (D) 40% | |
| House 3rd Hampshire | Mindy Domb (D) 99.2% | Unopposed | |
| House 3rd Middlesex | Kate Hogan (D) 98.1% | Unopposed | |
| House 3rd Norfolk | Ronald Mariano (D) 97.4% | Unopposed | |
| House 3rd Plymouth | Joan Meschino (D) 97.7% | Unopposed | |
| House 3rd Suffolk | Aaron Michlewitz (D) 98.3% | Unopposed | |
| House 3rd Worcester | Mike Kushmerek (D) 62.7% | Aaron Packard (R) 37.3% | |
| House 4th Barnstable | Sarah Peake (D) 98.7% | Unopposed | |
| House 4th Bristol | Steven Howitt (R) 98.2% | Unopposed | |
| House 4th Essex | Estela Reyes (D) 95.4% | Unopposed | |
| House 4th Hampden | Kelly Pease (R) 98.2% | Unopposed | |
| House 4th Middlesex | Danielle Gregoire (D) 98.7% | Unopposed | |
| House 4th Norfolk | James Michael Murphy (D) 63.9% | Paul Rotondo (R) 36% | |
| House 4th Plymouth | Patrick Kearney (D) 99.2% | Unopposed | |
| House 4th Suffolk | David Biele (D) 97.6% | Unopposed | |
| House 4th Worcester | Natalie Higgins (D) | John M. Dombrowski (I) 47.5% | |
| House 5th Barnstable | Steve Xiarhos (R) 100% | Unopposed | |
| House 5th Bristol | Patricia Haddad (D) 54.3% | Justin Thurber (R) 45.6% | |
| House 5th Essex | Ann-Margaret Ferrante (D) 69% | Ashley Sullivan (R) 30.8% | |
| House 5th Hampden | Pat Duffy (D) 97.3% | Unopposed | |
| House 5th Middlesex | David Linsky (D) 99.1% | Unopposed | |
| House 5th Norfolk | Mark Cusack (D) 96.8% | Unopposed | |
| House 5th Plymouth | David DeCoste (R) 51.7% | Emmanuel Dockter (D) 48.2% | |
| House 5th Suffolk | Chris Worrell (D) 88.59% | Roy A. Owens (I) 11.19%, Althea Garrison (D) 0.22% | |
| House 5th Worcester | Donald Berthiaume, Jr. (R) 98.4% | Unopposed | |
| House 6th Bristol | Carole Fiola (D) 96.6% | Unopposed | |
| House 6th Essex | Jerry Parisella (D) 98.8% | Unopposed | |
| House 6th Hampden | Mike Finn (D) 98.1% | Unopposed | |
| House 6th Middlesex | Priscila Sousa (D) 97.1% | Unopposed | |
| House 6th Norfolk | William C. Galvin (D) 99.1% | Unopposed | |
| House 6th Plymouth | Josh Cutler (D) 56.1% | Ken Sweezey (R) 43.9% | |
| House 6th Suffolk | Russell Holmes (D) 98.6% | Unopposed | |
| House 6th Worcester | Peter Durant (R) 98.3% | Unopposed | |
| House 7th Bristol | Alan Silvia (D) 96.5% | Unopposed | |
| House 7th Essex | Manny Cruz (D) 99.7% | Unopposed | |
| House 7th Hampden | Aaron Saunders (D) 52.7% | James Chip Harrington (R) 47.2% | |
| House 7th Middlesex | Jack Lewis (D) 98.7% | Unopposed | |
| House 7th Norfolk | William Driscoll Jr. (D) 98.5% | Unopposed | |
| House 7th Plymouth | Alyson Sullivan (R) 75.4% | Brandon James Griffin (D) 24.6% | |
| House 7th Suffolk | Chynah Tyler (D) 98.6% | Unopposed | |
| House 7th Worcester | Paul Frost (R) 75.06% | Terry Burke Dotson (I) 24.55% | |
| House 8th Bristol | Paul Schmid III (D) 53.5% | Evan Gendreau (R) 46.4% | |
| House 8th Essex | Jenny Armini (D) 98.5% | Unopposed | |
| House 8th Hampden | Shirley Arriaga (D) 64.44% | Sean Goonan (I) 35.04% | |
| House 8th Middlesex | James Arena-DeRosa (D) 65% | Loretta Barnes (R) 35% | |
| House 8th Norfolk | Ted Philips (D) 69.4% | Howard Terban (R) 30.6% | |
| House 8th Plymouth | Angelo D'Emilia (R) 60% | Eric Haikola (D) 40% | |
| House 8th Suffolk | Jay Livingstone (D) 98.1% | Unopposed | |
| House 8th Worcester | Mike Soter (R) 98.1% | Unopposed | |
| House 9th Bristol | Christopher Markey (D) 97.4% | Unopposed | |
| House 9th Essex | Donald Wong (R) 99% | Unopposed | |
| House 9th Hampden | Orlando Ramos (D) 96.5% | Unopposed | |
| House 9th Middlesex | Thomas M. Stanley (D) 98.1% | Unopposed | |
| House 9th Norfolk | Marcus Vaughn (R) 50.8% | Kevin Kalkut (D) 49.1% | |
| House 9th Plymouth | Gerry Cassidy (D) 60.5% | Lawrence Novak (R) 39.3% | |
| House 9th Suffolk | Jon Santiago (D) 98.6% | Unopposed | |
| House 9th Worcester | David Muradian, Jr. (R) 98.8% | Unopposed | |
| House 10th Bristol | William Straus (D) 56.2% | Jeffrey Swift (R) 43.7% | |
| House 10th Essex | Dan Cahill (D) 96.5% | Unopposed | |
| House 10th Hampden | Carlos González (D) 97.5% | Unopposed | |
| House 10th Middlesex | John J. Lawn, Jr. (D) 98.6% | Unopposed | |
| House 10th Norfolk | Jeff Roy (D) 63.7% | Charles Bailey (R) 36.2% | |
| House 10th Plymouth | Michelle DuBois (D) 98.6% | Unopposed | |
| House 10th Suffolk | Edward Coppinger (D) 100% | Unopposed | |
| House 10th Worcester | Brian Murray (D) 99.1% | Unopposed | |
| House 11th Bristol | Chris Hendricks (D) 96.8% | Unopposed | |
| House 11th Essex | Peter Capano (D) 97.3% | Unopposed | |
| House 11th Hampden | Bud Williams (D) 96.2% | Unopposed | |
| House 11th Middlesex | Kay Khan (D) 98.3% | Unopposed | |
| House 11th Norfolk | Paul McMurtry (D) 98.5% | Unopposed | |
| House 11th Plymouth | Rita Mendes (D) 91.56% | Fred Fontaine (I) 7.48% | |
| House 11th Suffolk | Judith García (D) 72.6% | Todd B. Taylor (R) 27.3% | |
| House 11th Worcester | Hannah Kane (R) 58.6% | Stephen Fishman (D) 41.4% | |
| House 12th Bristol | Norm Orrall (R) 98.5% | Unopposed | |
| House 12th Essex | Thomas Walsh (D) 97.3% | Unopposed | |
| House 12th Hampden | Angelo Puppolo (D) 97.4% | Unopposed | |
| House 12th Middlesex | Ruth Balser (D) 98.7% | Unopposed | |
| House 12th Norfolk | John Rogers (D) 97.9% | Unopposed | |
| House 12th Plymouth | Kathy LaNatra (D) 52.4% | Eric Meschino (R) 43.3%, Charles F. McCoy Jr. (I) 4.2% | |
| House 12th Suffolk | Brandy Fluker Oakley (D) 98.9% | Unopposed | |
| House 12th Worcester | Meg Kilcoyne (D) 60.3% | Michael Vulcano (R) 39.6% | |
| House 13th Bristol | Tony Cabral (D) 96.9% | Unopposed | |
| House 13th Essex | Sally Kerans (D) 94.1% | Michael Bean (R) 3.9% | |
| House 13th Middlesex | Carmine Gentile (D) 99.4% | Unopposed | |
| House 13th Norfolk | Denise Garlick (D) 98% | Unopposed | |
| House 13th Suffolk | Dan Hunt (D) 97.2% | Unopposed | |
| House 13th Worcester | John Mahoney (D) 97.6% | Unopposed | |
| House 14th Bristol | Adam Scanlon (D) 98.5% | Unopposed | |
| House 14th Essex | Adrianne Ramos (D) 54.3% | Joseph Finn (R) 45.7% | |
| House 14th Middlesex | Simon Cataldo (D) 72.9% | Rodney Cleaves (R) 27.1% | |
| House 14th Norfolk | Alice Peisch (D) 92.33% | David Rolde (G) 7.67% | |
| House 14th Suffolk | Rob Consalvo (D) 98.7% | Unopposed | |
| House 14th Worcester | Jim O'Day (D) 95.6% | Unopposed | |
| House 15th Essex | Ryan Hamilton (D) 95.2% | Unopposed | |
| House 15th Middlesex | Michelle Ciccolo (D) 98.7% | Unopposed | |
| House 15th Norfolk | Tommy Vitolo (D) 98.5% | Unopposed | |
| House 15th Suffolk | Sam Montaño (D) 98.8% | Unopposed | |
| House 15th Worcester | Mary Keefe (D) 96.8% | Unopposed | |
| House 16th Essex | Francisco Paulino (D) 96% | Unopposed | |
| House 16th Middlesex | Rodney Elliott (D) 65.3% | Karla J. Miller (R) 34.5% | |
| House 16th Suffolk | Jessica Giannino (D) 97% | Unopposed | |
| House 16th Worcester | Dan Donahue (D) 95.7% | Unopposed | |
| House 17th Essex | Frank Moran (D) 97.7% | Unopposed | |
| House 17th Middlesex | Vanna Howard (D) 96.4% | Unopposed | |
| House 17th Suffolk | Kevin Honan (D) 98.5% | Unopposed | |
| House 17th Worcester | David LeBoeuf (D) 59.1% | Paul Fullen (R) 40.7% | |
| House 18th Essex | Tram Nguyen (D) 60.4% | Jeffrey Dufour (R) 39.5% | |
| House 18th Middlesex | Rady Mom (D) 95.2% | Unopposed | |
| House 18th Suffolk | Michael J. Moran (D) 98.4% | Unopposed | |
| House 18th Worcester | Joe McKenna (R) 98.8% | Unopposed | |
| House 19th Middlesex | David B Robertson (D) 56.3% | Paul Sarnowski (R) 43.7% | |
| House 19th Suffolk | Jeff Turco (D) 95.3% | Unopposed | |
| House 19th Worcester | Kate Donaghue (D) 67.5% | Jonathan Hostage (R) 32.5% | |
| House 20th Middlesex | Bradley Jones, Jr. (R) 99% | Unopposed | |
| House 21st Middlesex | Ken Gordon (D) 97.1% | Unopposed | |
| House 22nd Middlesex | Marc Lombardo (R) 54.3% | Teresa Nicole English (D) 45.6% | |
| House 23rd Middlesex | Sean Garballey (D) 99.5% | Unopposed | |
| House 24th Middlesex | David M. Rogers (D) 99.6% | Unopposed | |
| House 25th Middlesex | Marjorie Decker (D) 99.5% | Unopposed | |
| House 26th Middlesex | Mike Connolly (D) 99.1% | Unopposed | |
| House 27th Middlesex | Erika Uyterhoeven (D) 98.6% | Unopposed | |
| House 28th Middlesex | Joe McGonagle (D) 70.09% | Michael Marchese (I) 28.9% | |
| House 29th Middlesex | Stephen Owens (D) 99.7% | Unopposed | |
| House 30th Middlesex | Rich Haggerty (D) 99.4% | Unopposed | |
| House 31st Middlesex | Mike Day (D) 70.89% | Theodore Menounos (I) 28.74% | |
| House 32nd Middlesex | Kate Lipper-Garabedian (D) 97.7% | Unopposed | |
| House 33rd Middlesex | Steve Ultrino (D) 97.3% | Unopposed | |
| House 34th Middlesex | Christine Barber (D) 99.4% | Unopposed | |
| House 35th Middlesex | Paul J. Donato, Sr. (D) 98.9% | Unopposed | |
| House 36th Middlesex | Colleen Garry (D) 60.6% | George Derek Boag (R) 39.4% | |
| House 37th Middlesex | Dan Sena (D) 98.6% | Unopposed | |
| House Barnstable, Dukes, and Nantucket | Dylan Fernandes (D) 98.6% | Unopposed | |
| Senate 1st Bristol and Plymouth | Michael Rodrigues (D) 57.6% | Russel Protentis (R) 42.3% | |
| Senate 1st Essex | Pavel Payano (D) 94.5% | Unopposed | |
| Senate 1st Essex and Middlesex | Bruce Tarr (R) 71.39% | Terence Cudney (I) 28.4% | |
| Senate 1st Middlesex | Edward Kennedy (D) 97.4% | Unopposed | |
| Senate 1st Plymouth and Norfolk | Patrick O'Connor (R) 60.6% | Robert F. Stephens (D) 39.4% | |
| Senate 1st Suffolk | Nick Collins (D) 97.8% | Unopposed | |
| Senate 1st Worcester | Robyn Kennedy (D) 72.8% | Lisa Mair (I) 26.1% | |
| Senate 2nd Bristol and Plymouth | Mark Montigny (D) 97.2% | Unopposed | |
| Senate 2nd Essex | Joan Lovely (D) 67.7% | Damian Anketell (R) 32.3% | |
| Senate 2nd Essex and Middlesex | Barry Finegold (D) 57.3% | Sal DeFranco (R) 42.6% | |
| Senate 2nd Middlesex | Patricia D. Jehlen (D) 99.2% | Unopposed | |
| Senate 2nd Plymouth and Norfolk | Michael D. Brady (D) 63.7% | Jimmy Gordon (R) 36.3% | |
| Senate 2nd Suffolk | Liz Miranda (D) 98.8% | Unopposed | |
| Senate 2nd Worcester | Michael O. Moore (D) 98.1% | Unopposed | |
| Senate 3rd Bristol and Plymouth | Marc Pacheco (D) 54.3% | Martha Layne Collins (R) 45.7% | |
| Senate 3rd Essex | Brendan Crighton (D) 71.04% | Annalisa Salustri (I) 28.54% | |
| Senate 3rd Middlesex | Michael J. Barrett (D) 98.7% | Unopposed | |
| Senate 3rd Suffolk | Lydia Edwards (D) 97% | Unopposed | |
| Senate 4th Middlesex | Cindy Friedman (D) 98% | Unopposed | |
| Senate 5th Middlesex | Jason Lewis (D) 63.5% | Edward Dombroski (R) 36.4% | |
| Senate Berkshire, Hampden, Franklin, and Hampshire | Paul Mark (D) 76.25% | Brendan Phair (I) 23.53% | |
| Senate Bristol and Norfolk | Paul Feeney (D) 58.7% | Michael Chaisson (R) 38.1%, Laura Saylor (R) 3.2% | |
| Senate Cape and Islands | Julian Cyr (D) 63.7% | Christopher Lauzon (R) 36.3% | |
| Senate Hampden | Adam Gómez (D) 96.6% | Unopposed | |
| Senate Hampden and Hampshire | John Velis (D) 65.6% | Cecilia Calabrese (R) 34.3% | |
| Senate Hampden, Hampshire, and Worcester | Jake Oliveira (D) 56.3% | Bill Johnson (R) 43.7% | |
| Senate Hampshire, Franklin, and Worcester | Joanne M. Comerford (D) 97.6% | Unopposed | |
| Senate Middlesex and Norfolk | Karen Spilka (D) 98.2% | Unopposed | |
| Senate Middlesex and Suffolk | Sal DiDomenico (D) 98.8% | Unopposed | |
| Senate Middlesex and Worcester | James B. Eldridge (D) 70.2% | Anthony Christakis (R) 29.7% | |
| Senate Norfolk and Middlesex | Cynthia Creem (D) 98.7% | Unopposed | |
| Senate Norfolk and Plymouth | John Keenan (D) 63.6% | Gary Innes (R) 36.3% | |
| Senate Norfolk and Suffolk | Michael F. Rush (D) 98.1% | Unopposed | |
| Senate Norfolk, Plymouth, and Bristol | Walter F. Timilty, Jr. (D) 66% | Brian Muello (R) 33.8% | |
| Senate Norfolk, Worcester, and Middlesex | Becca Rausch (D) 54.8% | Shawn Dooley (R) 45.1% | |
| Senate Plymouth and Barnstable | Susan K. Moran (D) 56.3% | Kari MacRae (R) 43.6% | |
| Senate Suffolk and Middlesex | William N. Brownsberger (D) 99% | Unopposed | |
| Senate Worcester and Hampden | Ryan Fattman (R) 98.5% | Unopposed | |
| Senate Worcester and Hampshire | Anne Gobi (D) 54.3% | James Amorello (R) 45.6% | |
| Senate Worcester and Middlesex | John Cronin (D) 60.2% | Kenneth Hoyt (R) 39.7% | |