| House 1st Barnstable | Chris Flanagan (D) 56.5% | Gerald Joseph O'Connell (R) 43.4% | |
| House 1st Berkshire | John Barrett (D) 99.3% | Unopposed | |
| House 1st Bristol | Michael Chaisson (R) 50.2% | Kostas Loukos (D) 49.8% | |
| House 1st Essex | Dawne Shand (D) 98.6% | Unopposed | |
| House 1st Franklin | Natalie Blais (D) 99% | Unopposed | |
| House 1st Hampden | Todd Smola (R) 99.2% | Unopposed | |
| House 1st Hampshire | Lindsay Sabadosa (D) 98.7% | Unopposed | |
| House 1st Middlesex | Margaret Scarsdale (D) 51.3% | Lynne Archambault (R) 48.6% | |
| House 1st Norfolk | Bruce Ayers (D) 98% | Unopposed | |
| House 1st Plymouth | Michelle Badger (D) 52.2% | Jesse Brown (R) 47.7% | Flipped R to D |
| House 1st Suffolk | Adrian Madaro (D) 97.1% | Unopposed | |
| House 1st Worcester | Kim Ferguson (R) 69.7% | Anthony Ferrante (D) 30.2% | |
| House 2nd Barnstable | Kip Diggs (D) 59.3% | Susanne Conley (R) 40.6% | |
| House 2nd Berkshire | Tricia Farley-Bouvier (D) 99.1% | Unopposed | |
| House 2nd Bristol | Jim Hawkins (D) 68.3% | Andrew Nelson (D) 18.9%, Patricia Bellfield (R) 12.8% | |
| House 2nd Essex | Kristin Kassner (D) 54.2% | Mark Tashjian (R) 45.7% | |
| House 2nd Franklin | Susannah Whipps (I) 65.6% | Jeffrey Raymond (R) 34.2% | |
| House 2nd Hampden | Brian Ashe (D) 97.8% | Unopposed | |
| House 2nd Hampshire | Homar Gomez (D) 99.5% | Unopposed | |
| House 2nd Middlesex | Jim Arciero (D) 98.2% | Unopposed | |
| House 2nd Norfolk | Tackey Chan (D) 69.4% | Sharon Cintolo (R) 30.3% | |
| House 2nd Plymouth | John Gaskey (R) 88.6% | Sarah Hewins (D) 10.9% | |
| House 2nd Suffolk | Danny Ryan (D) 98.1% | Unopposed | |
| House 2nd Worcester | Jon Zlotnik (D) 52.2% | Bruce Chester (R) 47.7% | |
| House 3rd Barnstable | Dave Vieira (R) 56% | Kathleen Fox Alfano (D) 44% | |
| House 3rd Berkshire | Leigh Davis (D) 57.4% | Marybeth Mitts (R) 42.4% | |
| House 3rd Bristol | Carol Doherty (D) 98.4% | Unopposed | |
| House 3rd Essex | Andy Vargas (D) 99.4% | Unopposed | |
| House 3rd Hampden | Nick Boldyga (R) 98.2% | Unopposed | |
| House 3rd Hampshire | Mindy Domb (D) 98.8% | Unopposed | |
| House 3rd Middlesex | Kate Hogan (D) 98.9% | Unopposed | |
| House 3rd Norfolk | Ronald Mariano (D) 97.4% | Unopposed | |
| House 3rd Plymouth | Joan Meschino (D) 98.4% | Unopposed | |
| House 3rd Suffolk | Aaron Michlewitz (D) 98.2% | Unopposed | |
| House 3rd Worcester | Mike Kushmerek (D) 96.5% | Unopposed | |
| House 4th Barnstable | Hadley Luddy (D) 98.7% | Unopposed | |
| House 4th Bristol | Steven Howitt (R) 98.6% | Unopposed | |
| House 4th Essex | Estela Reyes (D) 95.8% | Unopposed | |
| House 4th Hampden | Kelly Pease (R) 58.8% | Bridget Matthews-Kane (D) 41.1% | |
| House 4th Middlesex | Danielle Gregoire (D) 98.6% | Unopposed | |
| House 4th Norfolk | James Michael Murphy (D) 97.9% | Unopposed | |
| House 4th Plymouth | Patrick Kearney (D) 99.6% | Unopposed | |
| House 4th Suffolk | David Biele (D) 97.9% | Unopposed | |
| House 4th Worcester | Natalie Higgins (D) 57.5% | Salvatore Perla (R) 42.5% | |
| House 5th Barnstable | Steve Xiarhos (R) 61.3% | Owen Fletcher (D) 38.6% | |
| House 5th Bristol | Justin Thurber (R) 51.9% | Patricia Haddad (D) 48% | Flipped D to R; Incumbent defeated |
| House 5th Essex | Ann-Margaret Ferrante (D) 66.5% | Steven Leblanc Jr. (R) 33.2% | |
| House 5th Hampden | Pat Duffy (D) 99.5% | Unopposed | |
| House 5th Middlesex | David Linsky (D) 99% | Unopposed | |
| House 5th Norfolk | Mark Cusack (D) 97.5% | Unopposed | |
| House 5th Plymouth | David DeCoste (R) 97.7% | Unopposed | |
| House 5th Suffolk | Chris Worrell (D) 97.6% | Unopposed | |
| House 5th Worcester | Donald Berthiaume, Jr. (R) 98.8% | Unopposed | |
| House 6th Bristol | Carole Fiola (D) 96.5% | Unopposed | |
| House 6th Essex | Jerry Parisella (D) 71% | Ty Vitale (R) 23.7%, Euplio Marciano (D) 5.2% | |
| House 6th Hampden | Mike Finn (D) 98.7% | Unopposed | |
| House 6th Middlesex | Priscila Sousa (D) 96.8% | Unopposed | |
| House 6th Norfolk | William C. Galvin (D) 99.1% | Unopposed | |
| House 6th Plymouth | Ken Sweezey (R) 52.9% | Rebecca Coletta (D) 47% | Flipped D to R |
| House 6th Suffolk | Russell Holmes (D) 97.6% | Unopposed | |
| House 6th Worcester | John Marsi (R) 61.8% | Jeanne Renaud Costello (D) 38% | |
| House 7th Bristol | Alan Silvia (D) 97% | Unopposed | |
| House 7th Essex | Manny Cruz (D) 99.3% | Unopposed | |
| House 7th Hampden | Aaron Saunders (D) 99.2% | Unopposed | |
| House 7th Middlesex | Jack Lewis (D) 98.6% | Unopposed | |
| House 7th Norfolk | Richard Wells (D) 64.5% | Clinton Graham (R) 34.9% | |
| House 7th Plymouth | Alyson Sullivan (R) 98.8% | Unopposed | |
| House 7th Suffolk | Chynah Tyler (D) 97.9% | Unopposed | |
| House 7th Worcester | Paul Frost (R) 69.1% | Terry Burke Dotson (D) 30.7% | |
| House 8th Bristol | Steven Ouellette (D) 33.8% | Christopher Thrasher (R) 32.7%, Jesse St. Gelais (I) 19.1% | |
| House 8th Essex | Jenny Armini (D) 98.5% | Unopposed | |
| House 8th Hampden | Shirley Arriaga (D) 96.5% | Unopposed | |
| House 8th Middlesex | James Arena-DeRosa (D) 98.2% | Unopposed | |
| House 8th Norfolk | Ted Philips (D) 98.5% | Unopposed | |
| House 8th Plymouth | Dennis Gallagher (D) 50.5% | Sandra Wright (R) 49.5% | Flipped R to D |
| House 8th Suffolk | Jay Livingstone (D) 98.5% | Unopposed | |
| House 8th Worcester | Mike Soter (R) 98.4% | Unopposed | |
| House 9th Bristol | Christopher Markey (D) 98.9% | Unopposed | |
| House 9th Essex | Donald Wong (R) 98.9% | Unopposed | |
| House 9th Hampden | Orlando Ramos (D) 96.8% | Unopposed | |
| House 9th Middlesex | Thomas M. Stanley (D) 72.7% | Carly Downs (R) 20.7%, Sean Diamond (I) 6.6% | |
| House 9th Norfolk | Marcus Vaughn (R) 57.4% | Kevin Kalkut (D) 42.6% | |
| House 9th Plymouth | Bridget Plouffe (D) 54.3% | Lawrence Novak (R) 30.1%, Jonathan Gill (I) 15.6% | |
| House 9th Suffolk | John Moran (D) 82.2% | Roy A. Owens (R) 17.5% | |
| House 9th Worcester | David Muradian, Jr. (R) 98.5% | Unopposed | |
| House 10th Bristol | Mark Sylvia (D) 52.6% | Joseph Pires (R) 47.3% | |
| House 10th Essex | Dan Cahill (D) 96.6% | Unopposed | |
| House 10th Hampden | Carlos González (D) 97.2% | Unopposed | |
| House 10th Middlesex | John J. Lawn, Jr. (D) 99.4% | Unopposed | |
| House 10th Norfolk | Jeff Roy (D) 61.7% | Charles Bailey (R) 38.2% | |
| House 10th Plymouth | Michelle DuBois (D) 99.8% | Unopposed | |
| House 10th Suffolk | Billy MacGregor (D) 98.3% | Unopposed | |
| House 10th Worcester | Brian Murray (D) 97.3% | Unopposed | |
| House 11th Bristol | Chris Hendricks (D) 96.4% | Unopposed | |
| House 11th Essex | Sean Reid (D) 96.2% | Unopposed | |
| House 11th Hampden | Bud Williams (D) 96% | Unopposed | |
| House 11th Middlesex | Amy Sangiolo (D) 81.1% | Vladislav Yanovsky (R) 18.7% | |
| House 11th Norfolk | Paul McMurtry (D) 68% | Andrew Pepoli (R) 31.8% | |
| House 11th Plymouth | Rita Mendes (D) 99.7% | Unopposed | |
| House 11th Suffolk | Judith García (D) 99.6% | Unopposed | |
| House 11th Worcester | Hannah Kane (R) 98.9% | Unopposed | |
| House 12th Bristol | Norm Orrall (R) 98.7% | Unopposed | |
| House 12th Essex | Thomas Walsh (D) 97.4% | Unopposed | |
| House 12th Hampden | Angelo Puppolo (D) 97.8% | Unopposed | |
| House 12th Middlesex | Greg Schwartz (D) 98.4% | Unopposed | |
| House 12th Norfolk | John Rogers (D) 98.2% | Unopposed | |
| House 12th Plymouth | Kathy LaNatra (D) 53.1% | Eric Meschino (R) 46.8% | |
| House 12th Suffolk | Brandy Fluker Oakley (D) 98.4% | Unopposed | |
| House 12th Worcester | Meg Kilcoyne (D) 97.7% | Unopposed | |
| House 13th Bristol | Tony Cabral (D) 97% | Unopposed | |
| House 13th Essex | Sally Kerans (D) 98.1% | Unopposed | |
| House 13th Middlesex | Carmine Gentile (D) 73.5% | Virginia A Gardner (R) 26.4% | |
| House 13th Norfolk | Josh Tarsky (D) 61.2% | William Dermody (R) 38.4% | |
| House 13th Suffolk | Dan Hunt (D) 97.1% | Unopposed | |
| House 13th Worcester | John Mahoney (D) 96.9% | Unopposed | |
| House 14th Bristol | Adam Scanlon (D) 55.9% | David Cannata (R) 44% | |
| House 14th Essex | Adrianne Ramos (D) 98.9% | Unopposed | |
| House 14th Middlesex | Simon Cataldo (D) 98.8% | Unopposed | |
| House 14th Norfolk | Alice Peisch (D) 99.2% | Unopposed | |
| House 14th Suffolk | Rob Consalvo (D) 97.9% | Unopposed | |
| House 14th Worcester | Jim O'Day (D) 96.6% | Unopposed | |
| House 15th Essex | Ryan Hamilton (D) 97.4% | Unopposed | |
| House 15th Middlesex | Michelle Ciccolo (D) 99% | Unopposed | |
| House 15th Norfolk | Tommy Vitolo (D) 98.6% | Unopposed | |
| House 15th Suffolk | Sam Montaño (D) 98.7% | Unopposed | |
| House 15th Worcester | Mary Keefe (D) 96.2% | Unopposed | |
| House 16th Essex | Francisco Paulino (D) 95.4% | Unopposed | |
| House 16th Middlesex | Rodney Elliott (D) 96.7% | Unopposed | |
| House 16th Suffolk | Jessica Giannino (D) 96.8% | Unopposed | |
| House 16th Worcester | Dan Donahue (D) 95.9% | Unopposed | |
| House 17th Essex | Frank Moran (D) 97.6% | Unopposed | |
| House 17th Middlesex | Vanna Howard (D) 76.6% | Joseph Onoroski (R) 21.8% | |
| House 17th Suffolk | Kevin Honan (D) 98.3% | Unopposed | |
| House 17th Worcester | David LeBoeuf (D) 95.4% | Unopposed | |
| House 18th Essex | Tram Nguyen (D) 98% | Unopposed | |
| House 18th Middlesex | Tara Hong (D) 77.7% | David Ouellette (R) 21.5% | |
| House 18th Suffolk | Michael J. Moran (D) 97.9% | Unopposed | |
| House 18th Worcester | Joe McKenna (R) 98.9% | Unopposed | |
| House 19th Middlesex | David B Robertson (D) 52.5% | Paul Sarnowski (R) 38.8%, George Ferdinand (I) 8.5% | |
| House 19th Suffolk | Jeff Turco (D) 96.7% | Unopposed | |
| House 19th Worcester | Kate Donaghue (D) 77.5% | Boyd Conklin (R) 22.2% | |
| House 20th Middlesex | Bradley Jones, Jr. (R) 99.6% | Unopposed | |
| House 21st Middlesex | Ken Gordon (D) 97.5% | Unopposed | |
| House 22nd Middlesex | Marc Lombardo (R) 60.2% | George Simolaris Jr. (D) 38.3% | |
| House 23rd Middlesex | Sean Garballey (D) 99% | Unopposed | |
| House 24th Middlesex | David M. Rogers (D) 99.5% | Unopposed | |
| House 25th Middlesex | Marjorie Decker (D) 96.8% | Evan MacKay (D) 2.5% | |
| House 26th Middlesex | Mike Connolly (D) 98.9% | Unopposed | |
| House 27th Middlesex | Erika Uyterhoeven (D) 98% | Unopposed | |
| House 28th Middlesex | Joe McGonagle (D) 96% | Unopposed | |
| House 29th Middlesex | Stephen Owens (D) 99.6% | Unopposed | |
| House 30th Middlesex | Rich Haggerty (D) 99.7% | Unopposed | |
| House 31st Middlesex | Mike Day (D) 99.1% | Unopposed | |
| House 32nd Middlesex | Kate Lipper-Garabedian (D) 98% | Unopposed | |
| House 33rd Middlesex | Steve Ultrino (D) 97.2% | Unopposed | |
| House 34th Middlesex | Christine Barber (D) 98% | Unopposed | |
| House 35th Middlesex | Paul J. Donato, Sr. (D) 96.8% | Unopposed | |
| House 36th Middlesex | Colleen Garry (D) 100% | Unopposed | |
| House 37th Middlesex | Dan Sena (D) 98.7% | Unopposed | |
| House Barnstable, Dukes, and Nantucket | Thomas Moakley (D) 98.9% | Unopposed | |
| Senate 1st Bristol and Plymouth | Michael Rodrigues (D) 97.6% | Unopposed | |
| Senate 1st Essex | Pavel Payano (D) 96.3% | Unopposed | |
| Senate 1st Essex and Middlesex | Bruce Tarr (R) 98.8% | Unopposed | |
| Senate 1st Middlesex | Edward Kennedy (D) 63.4% | Karla J. Miller (R) 36.3% | |
| Senate 1st Plymouth and Norfolk | Patrick O'Connor (R) 98.9% | Unopposed | |
| Senate 1st Suffolk | Nick Collins (D) 97.7% | Unopposed | |
| Senate 1st Worcester | Robyn Kennedy (D) 97% | Unopposed | |
| Senate 2nd Bristol and Plymouth | Mark Montigny (D) 97.8% | Unopposed | |
| Senate 2nd Essex | Joan Lovely (D) 66.8% | Damian Anketell (R) 33.1% | |
| Senate 2nd Essex and Middlesex | Barry Finegold (D) 98.4% | Unopposed | |
| Senate 2nd Middlesex | Patricia D. Jehlen (D) 98.4% | Unopposed | |
| Senate 2nd Plymouth and Norfolk | Michael D. Brady (D) 99.1% | Unopposed | |
| Senate 2nd Suffolk | Liz Miranda (D) 98.3% | Unopposed | |
| Senate 2nd Worcester | Michael O. Moore (D) 98.3% | Unopposed | |
| Senate 3rd Bristol and Plymouth | Kelly Dooner (R) 48.3% | Joseph Pacheco (D) 46.6%, James DuPont (R) 5% | Flipped D to R |
| Senate 3rd Essex | Brendan Crighton (D) 97.8% | Unopposed | |
| Senate 3rd Middlesex | Michael J. Barrett (D) 99.2% | Unopposed | |
| Senate 3rd Suffolk | Lydia Edwards (D) 69.9% | Jeanna Tamas (R) 29.6% | |
| Senate 4th Middlesex | Cindy Friedman (D) 98.3% | Unopposed | |
| Senate 5th Middlesex | Jason Lewis (D) 98.4% | Unopposed | |
| Senate Berkshire, Hampden, Franklin, and Hampshire | Paul Mark (D) 70.9% | David Rosa (R) 29% | |
| Senate Bristol and Norfolk | Paul Feeney (D) 72.6% | Laura Saylor (R) 26.9% | |
| Senate Cape and Islands | Julian Cyr (D) 60.9% | Christopher Lauzon (R) 36.6%, Joe Van Nes (I) 2.3% | |
| Senate Hampden | Adam Gómez (D) 97% | Unopposed | |
| Senate Hampden and Hampshire | John Velis (D) 98.7% | Unopposed | |
| Senate Hampden, Hampshire, and Worcester | Jake Oliveira (D) 98% | Unopposed | |
| Senate Hampshire, Franklin, and Worcester | Joanne M. Comerford (D) 98.5% | Unopposed | |
| Senate Middlesex and Norfolk | Karen Spilka (D) 98.3% | Unopposed | |
| Senate Middlesex and Suffolk | Sal DiDomenico (D) 98.5% | Unopposed | |
| Senate Middlesex and Worcester | James B. Eldridge (D) 98.8% | Unopposed | |
| Senate Norfolk and Middlesex | Cynthia Creem (D) 98.7% | Unopposed | |
| Senate Norfolk and Plymouth | John Keenan (D) 97.9% | Unopposed | |
| Senate Norfolk and Suffolk | Michael F. Rush (D) 98.2% | Unopposed | |
| Senate Norfolk, Plymouth, and Bristol | William Driscoll Jr. (D) 98.4% | Unopposed | |
| Senate Norfolk, Worcester, and Middlesex | Becca Rausch (D) 58.8% | Dashe Videira (R) 41% | |
| Senate Plymouth and Barnstable | Dylan Fernandes (D) 51.2% | Mathew Muratore (R) 48.7% | |
| Senate Suffolk and Middlesex | William N. Brownsberger (D) 98.8% | Unopposed | |
| Senate Worcester and Hampden | Ryan Fattman (R) 65.8% | Anthony Allard (D) 34.1% | |
| Senate Worcester and Hampshire | Peter Durant (R) 58.3% | Sheila Dibb (D) 41.5% | |
| Senate Worcester and Middlesex | John Cronin (D) 59% | Nicholas Pirro III (R) 40.8% | |