With less than a month to go before primary elections, contested races are heating up across Massachusetts.

The primary, scheduled for Tuesday, Sept. 4, will decide which Democratic and Republican candidates will go on to run against one another in the general election scheduled for Nov. 6.

This year, the primary is scheduled for the day after Labor Day, which could complicate voting for some people, such as families with school-age children and college students, who might be leaving the state.

“Voting on the day after Labor Day will prove challenging for voters in the commonwealth, especially for families preparing children for the start of school, and for candidates who are eager to get their message out to voters,” the League of Women Voters Massachusetts wrote in a statement earlier this year.

Aug. 15 is the deadline for voter registration, and absentee ballots must be received by local election officials by 5 p.m. on Aug. 31, according to the Secretary of State’s office.

Primary elections, as it is, typically draw fewer voters than general elections, especially in years without a race for United States president.

About 716,028 of eligible voters -- 16.9 percent -- cast ballots during the primary election in 2014, the most-recent midterm election, which is a far cry from the 2.2 million people who voted during the general election a couple months later.

The large number of uncontested primary races, too, could contribute to low interest among voters, especially in districts with few choices.

Statewide and congressional races are typically more competitive. But the parties are less successful in garnering much competition for legislative races.

For the 160 seats in the Massachusetts House of Representatives, there are 35 contested primary races for Democrats and five contested races for Republicans. In the state Senate, with 40 seats, there are seven contested races for Democrats and zero for Republicans.

For statewide and regional races, Democrats will be paying close attention to contested races, including the U.S House of Representatives, governor, lieutenant governor, secretary of state and a few Governor’s Council seats.

Republicans, meanwhile, are eyeing contested races for U.S. Senate, U.S. House of Representatives, governor and attorney general.

Libertarians have no primary races and independents are only required to run in the general election.

Here are the names of some congressional, statewide and regional candidates voters should expect to see on the ballot:

 

CONGRESS

U.S. Senate

Democrat:

-- Elizabeth Warren of Cambridge

Republican:

-- Geoff Diehl of Whitman

-- John Kingston of Winchester

-- Beth Lindstrom of Groton

 

U.S. House of Representatives

First District

Democrat:

-- Richard Neal of Springfield

-- Tahirah Amatul-Wadud of Springfield

Republican: No nomination

Second District

Democrat:

-- Jim McGovern of Worcester

-- Dominic Warren of Worcester

Republican:

-- Tracy Lyn Lavorn of Grafton

-- Kevin William Powers of Millville

Third District

Democrat:

-- Jeffrey Ballinger of Andover

-- Alexandra Chandler of Haverhill

-- Beej Das of Lowell

-- Rufus Gifford of Concord

-- Leonard Golder of Stow

-- Daniel Arrigg Koh of Andover

-- Barbara L’Italien of Andover

-- Bopha Malone of Bedford

-- Juana Matias of Lawrence

-- Lori Loureiro Trahan of Westford

Republican:

-- Rick Green of Pepperell

Fourth District

Democrat:

-- Joseph Kennedy III of Newton

-- Gary Rucinski of Newton

Republican: No nomination

Fifth District

Democrat:

-- Katherine Clark of Melrose

Republican:

-- John Hugo of Woburn

-- Louis Kuchnir of Southborough

Sixth District

Democrat:

-- Seth Moulton of Salem

Republican:

-- Joseph Schneider of Beverly

Seventh District

Democrat:

-- Michael Capuano of Somerville

-- Ayanna Pressley of Boston

Republican: No nomination

Eighth District

Democrat:

-- Stephen Lynch of Boston

-- Christopher Voehl of Milton

-- Brianna Wu of Dedham

Republican: No nomination

Ninth District

Democrat:

-- Bill Keating of Bourne

-- Bill Cimbrelo of Barnstable

Republican:

-- Peter Tedeschi of Marshfield

 

STATEWIDE

Governor

Democrat:

-- Jay Gonzalez of Needham

-- Bob Massie of Somerville

Republican:

-- Charlie Baker of Swampscott

-- Scott Lively of Springfield

Lieutenant Governor

Democrat:

-- Quentin Palfrey of Weston

-- Jimmy Tingle of Cambridge

Republican:

-- Karyn Polito of Shrewsbury

Attorney General

Democrat:

-- Maura Healey of Boston

Republican:

-- James McMahon III of Bourne

-- Daniel Shores of Hingham

Secretary of State

Democrat:

-- William Galvin of Boston

-- Josh Zakim of Boston

Republican:

-- Anthony Amore of Swampscott

Treasurer

Democrat:

-- Deborah Goldberg of Brookline

Republican:

-- Keiko Orrall of Lakeville

Auditor

-- Suzanne Bump of Easton

 

GOVERNOR’S COUNCIL

Third District

Democrat:

-- Marilyn Petitto Devaney of Watertown

-- Nick Carter of Newton

Fourth District

Democrat:

-- Christopher Iannella Jr. of Boston

-- Mark Rooney of Boston

Fifth District

Democrat:

-- Eileen Duff of Gloucester

-- Nicholas Torressi of Methuen

 

STATE SENATE

Berkshire, Hampshire, Franklin & Hampden District

Democrat:

-- Adam Hinds of Pittsfield

-- Thomas Wickham of Lee

Second Essex & Middlesex District

Democrat:

-- Mike Armano of Dracut

-- Barry Finegold of Andover

-- Pavel Payano of Lawrence

Hampden District

Democrat:

-- James Welch

-- Amaad Isiah Rivera

First Middlesex District

Democrat:

-- John Drinkwater of Lowell

-- Rodney Elliott of Lowell

-- Edward Kennedy of Lowell

-- William Martin Jr. of Lowell

-- Terry Ryan of Westford

Fifth Middlesex District

Democrat:

-- Jason Lewis of Winchester

-- Samantha Hammar of Melrose

Norfolk, Bristol and Middlesex District

Democrat:

-- Kristopher Aleksov of Wayland

-- Jacqueline Katz of Norfolk

-- Rebecca Rausch of Needham

Plymouth and Barnstable District

Democrat:

-- Stephen Michael Palmer of Plymouth

-- Deborah Rudolf of Plymouth

 

STATE REPRESENTATIVE

First Barnstable District

Democrat:

-- Steven Leibowitz of Brewster

-- Joshua Mason of Dennis

Fifth Barnstable District

Republican:

-- Randy Hunt of Sandwich

-- Ronald Beaty Jr.of Barnstable

Second Bristol District

Democrat:

-- James Hawkins of Attleboro

-- Sara Lynn Reynolds of Attleboro

Eleventh Bristol District

Democrat:

-- Robert Koczera of New Bedford

-- Christopher Hendricks of New Bedford

Sixth Essex District

Democrat:

-- Jerald Parisella of Beverly

-- Euplio Marciano of Beverly

11th Essex District

Democrat:

-- Peter Capano of Lynn

-- Hong Net of Lynn

-- Drew Russo of Lynn

14th Essex District

Democrat:

-- Lisa Yarid Ferry of Methuen

-- Christina Minicucci of North Andover

16th Essex District

Democrat:

-- Marcos Devers of Lawrence

-- William Lantigua of Lawrence

First Franklin District

Democrat:

-- Kate Welch Albright-Hanna of Huntington

-- Andrew Baker of Shelburne

-- Natalie Blais of Sunderland

-- Christine Doktor of Cummington

-- Jonathan Edwards of Whately

-- Nathaniel Waring of Sunderland

-- Francia Wisnewski of Montague

Ninth Hampden District

Democrat:

-- Jose Tosado of Springfield

-- Mark Kenyon of Springfield

First Hampshire District

Democrat:

-- Lindsay Sabadosa of Northampton

-- Diana Szynal of Hatfield

Second Hampshire District

Democrat:

-- Daniel Carey of Easthampton

-- John Hine of South Hadley

-- P. Marie McCourt of Granby

Third Hampshire District

Democrat:

-- Mindy Domb of Amherst

-- Eric Nakajima of Amherst

Third Middlesex District

Democrat:

-- Kate Hogan of Stow

-- Edward Basile of Bolton

14th Middlesex District

Democrat:

-- Benjamin Bloomenthal of Acton

-- Tami Gouveia of Acton

-- Christian Krueger of Concord

15th Middlesex District

Democrat:

-- Michelle Ciccolo of Lexington

-- Matthew Cohen of Lexington

-- Joseph Lahiff of Lexington

-- Mary Ann Stewart of Lexington

-- William Joseph Sweeney of Lexington

18th Middlesex District

-- Rady Mom of Lowell

-- James Leary of Lowell

-- Sam Meas of Lowell

-- Rithy Uong of Lowell

19th Middlesex District

Democrat:

-- Erika Frances Johnson of Wilmington

-- Mark Kratman of Tewksbury

-- Michael McCoy of Wilmington

-- Judith O’Connell of Wilmington

-- David Allen Robertson of Tewksbury

Republican:

-- Erin Marie Buckley of Tewksbury

-- Pina Prinzivalli of Tewksbury

23rd Middlesex District

Democrat:

-- Sean Garballey of Arlington

-- Lori Lennon of Arlington

25th Middlesex District

Democrat:

-- Marjorie Decker of Cambridge

-- Lesley Rebecca Philips of Cambridge

28th Middlesex District

Democrat:

-- Joseph McGonagle Jr. of Everett

-- Gary Adrien of Everett

-- Stephen Stat Smith of Everett

30th Middlesex District

Democrat:

-- Joseph Demers of Woburn

-- Richard Haggerty of Woburn

-- Anne Landry of Reading

-- Darryn Elliot Remillard of Woburn

36th Middlesex District

Democrat:

-- Colleen Garry of Dracut

-- Sabrina Adena Heisey of Dracut

13th Norfolk District

Democrat:

-- Denise Garlick of Needham

-- Theodore Steinberg of Needham

15th Norfolk District

Democrat:

-- Rebecca Stone of Brookline

-- Tommy Vitolo of Brookline

Fourth Plymouth District

Democrat:

-- Sean Costello of Marshfield

-- Patrick Joseph Kearney of Scituate

Republican:

-- Edward O’Connell of Marshfield

-- Craig Valdez of Scituate

Seventh Plymouth District

Democrat:

-- Alex Bezanson of Abington

-- Kevin Higgins of Whitman

Republican:

-- Gregory Eaton of Whitman

-- Alyson Sullivan of Abington

12th Plymouth District

Republican:

-- Summer Schmaling of Halifax

-- Joseph Truschelli of Plymouth

Fourth Suffolk District

Democrat:

-- David Biele of Boston

-- Matthew Rusteika of Boston

Fifth Suffolk District

Democrat:

-- Darrin Howell of Boston

-- Brad Howze of Boston

-- Liz Miranda of Boston

-- Roy Owens of Boston

Ninth Suffolk District

Democrat:

-- Byron Rushing of Boston

-- Suezanne Bruce of Boston

-- Jon Santiago of Boston

11th Suffolk District

Democrat:

-- Elizabeth Malia of Boston

-- Charles Clemons Muhammad of Boston

-- Ture Turnbull of Boston

12th Suffolk District

Democrat:

-- Dan Cullinane of Boston

-- Jovan Lacet of Boston

14th Suffolk District

Democrat:

-- Angelo Scaccia of Boston

-- Segun Idowu of Boston

-- Christopher Obi Nzenwa of Boston

-- Virak Uy of Boston

-- Gretchen Van Ness of Boston

15th Suffolk District

Democrat:

-- Jeffrey Sanchez of Boston

-- Nika Elugardo of Boston

Eighth Worcester District

Democrat:

-- Patrick Malone of Uxbridge

-- Kevin Tagliaferri of Bellingham

Republican:

-- Ryan Chamberland of Blackstone

-- Michael Soter of Bellingham

17th Worcester District

Democrat:

-- Pamela Gemme of Leicester

-- David Henry Argosky Leboeuf of Worcester

-- W. Stuart Loosemore of Leicester