In accordance with the Maine Constitution, the Legislature has re-apportioned and re-numbered all the electoral districts across the state beginning with this November’s election.

In addition, with the deadline now past for filing nomination forms with the Maine Secretary of State’s office, the slate of party candidates running for the Legislature this fall has also been set.

Raphaelle Silver, director of communications for the secretary of state, said the Maine Constitution mandates that all congressional, legislative and county district lines be redrawn every 10 years following the national census.

To bring Maine more into alignment with other states, the congressional districts were redrawn for the 2012 election, but the state and county electoral districts were redrawn last year to take effect during the 2014 election cycle, Silver said.

She said all the districts would be redrawn again for the 2022 election. And, following tradition, the Legislature has also renumbered all of the newly drawn districts, with the House districts now running south to north and the Senate districts running north to south.

Silver said the electoral districts are drawn based on a variety of factors, but the most important factor is population, in order to better fulfill the one-man, one-vote ideal.

Under the Maine Constitution, the size of each electoral district is determined by dividing the number of senators and representatives into the number of inhabitants of the state. The final district lines are first established by an Apportionment Commission and are then affirmed by a two-thirds vote of the Legislature. If the Legislature fails to act, the re-apportionment becomes the responsibility of the Maine Supreme Judicial Court.

Then, Silver said, it’s up to the secretary of state to implement the election districts that were established, which includes providing district maps and a written narrative with geographic descriptions of all the newly re-apportioned election districts.

All seats in both houses of the Legislature are up every two years and all legislators are subject to an eight-year term limit, under the Maine Constitution.

With a number of longtime legislators now term-limited out of office, this year’s slate of candidates features a number of new names alongside incumbents. Several members of the House are also seeking to jump to the Senate, including Amy Volk, a Republican from Scarborough.

There are three recognized parties in Maine, the Democratic, Republican and Green. Primaries between candidates of the same party are scheduled for June 10 and the general election will be held on Nov. 4.

Party candidates had until March 17 to turn in their nomination forms to run for the Legislature, according to the secretary of state’s office.

In South Portland, Scarborough and Cape Elizabeth incumbent state Sen. Rebecca Millett, D-Cumberland County, is facing challenges from Republican John Ridge and Green candidate Mark Diehl for Senate District 29, formerly District 7.

In Senate District 30, formerly District 6, which also includes a large part of Scarborough, as well as Westbrook and Gorham, incumbent Jim Boyle, D-Cumberland County, is set to take on Republican state Rep. Amy Volk, who represents Scarborough.

In House District 28, formerly District 128, incumbent state Rep. Heather Sirocki, R-Scarborough, will face a challenge from Democrat Dwight Ely. And in House District 29, formerly District 127, Democrat Paul Aronson and Republican Karen Vachon will vie for the seat being vacated by Volk.

For House District 30, formerly District 121, incumbent state Rep. Joan Monaghan-Derig, D-Cape Elizabeth, will take on Republican Holly Buonaiuto.

In House District 31, formerly District 122, incumbent state Rep. Terry Morrison, D-South Portland, will face a challenge from Republican Stephen Popp.

For House District 32, formerly District 123, incumbent state Rep. Scott Hamann, D-South Portland, will vie against Kenneth Myrick, a Republican.

And, in House District 33, formerly, District 124, there will be a primary battle between Democrats Rosemarie DeAngelis and Timothy Smith for the seat being vacated by South Portland state Rep. Bryan Kaenrath.

The winner of the primary will then face off against Republican Kevin Battle and Green candidate Robert Klotz.

In Westbrook, Gorham, Buxton and Hollis there is only one primary race, with all the other legislative seats featuring one candidate from each party.

In House District 35, formerly District 125, incumbent Ann Peoples, D-Westbrook, is term-limited out. Democrats Dillon Bates and Suzanne Salisbury are set to square off in the primary, with Republican Emily Downing scheduled to take on the winner.

In Senate District 28, formerly, District 9, incumbent Anne Haskell, D-Cumberland County, is set to take on Republican Anne Rose Marie Russell and Danielle Unterreiner, the Green Party candidate.

In Senate District 30, formerly District 6, which covers a part of Scarborough, Gorham and Buxton, incumbent Jim Boyle, D-Cumberland County is set to take on Volk.

In House District 16, formerly District 131, which covers Buxton and Hollis, incumbent Donald Marean, R-Hollis, is running against Democrat Ronald Usher.

In House District 26, formerly District 130, incumbent Linda Sanborn, D-Gorham, is taking on Republican Jacob Adams. And, in House District 27, formerly District 129, incumbent Andrew McLean, D-Gorham, is taking on Republican Tyler Kinney.

In Westbrook House Seat 34, formerly District 126, incumbent Drew Gattine, D-Westbrook, will face off against Republican Mark Shapp.

In Windham, Standish and the other communities in the Lakes Region, there is a dual primary race for Senate District 25, formerly District 11, which includes Gray and part of Westbrook. In that district incumbent Richard Woodbury is not running for re-election.

The candidates are Democrats Catherine Breen and Stephen Woods and Republicans William Gardiner and David Savage. Whoever wins the respective primaries will be the candidates for the November general election.

In Senate District 26, formerly District 12, former Secretary of State William Diamond, a Democrat, will take on Republican David Call. District 26 includes the towns of Standish, Windham, Casco, Raymond and Frye Island.

In Senate District 19, formerly District 13, which covers Bridgton, Naples and Sebago, incumbent James Hamper, R-Oxford, will take on Democrat Rose Rogers-Wells.

In House District 23, formerly District 102, which covers Standish, incumbent Michael Shaw, D-Standish, is facing a primary challenge from Michael Wakefield. Republican Lester Ordway will face off against the winner.

In House District 24, formerly District 110, which covers Windham, Democrat Mark Bryant is taking on Republican Dennis Welch. And in House District 25, formerly District 111, Patrick Corey is the Republican candidate who will face off against incumbent Jane Pringle, D-Windham.

In House District 65, formerly District 105, incumbent Eleanor Espling, R-New Gloucester, will take on Democrat Mark Stevens. District 66, formerly District 103, which covers Casco and Raymond, incumbent Michael McClellan, R-Raymond, is facing a challenge from both Democrat Mary Femandes and Green candidates Lisa Wiley.

In House District 67, formerly District 109, which covers Gray, Republican Susan Austin will face off against Democrat Bonnie Lewis. In House District 68, formerly District 101, incumbent Christine Powers, D-Naples, will face a challenge from former state Rep. Richard Cebra, who was also briefly chairman of the Maine Republican Party.

In House District 69, formerly District 98, incumbent Lisa Villa, D- Harrison, will vie against Republican Phylis Ginzler.

In Sanford and surrounding towns, there will be a primary race between incumbent state senator John Tuttle, D-York County, and state Rep. Andrea Boland, D-Sanford, in Senate District 33, formerly District 3. Whoever wins the primary will face off against Republican Adam McGee.

In Senate District 34, formerly District 2, which includes the town of Lebanon, the incumbent, state Sen. Ron Collins, R-York County, will take on Democrat Gary Connor.

In House District 18, formerly District 143, incumbent state Rep. Anne-Marie Mastraccio, D-Sanford, will face a challenge from Republican Gordon Frohloff.

In House District 19, formerly District 144, incumbent state Rep. William Noon, D-Sanford, will vie against Republican Sarah Cognate.

And, in House District 20, formerly District 145, which covers Lebanon, Democrat Bettie Harris-Howard will take on the winner of the Republican primary being contested between Karen Gerrish and Harrison Thorp.

In Biddeford, Saco and Old Orchard Beach, Republcian Michael Coleman, a former town councilor in Old Orchard Beach, will take on incumbent state Sen. Linda Valentino, D-York County, in Senate District 31, formerly District 5.

In Senate District 32, formerly District 4, which includes Biddeford, incumbent state Sen. David Dutremble, R-York County, is facing a challenge from Democrat James Booth.

In House District 11, formerly District 136, which includes Biddeford, there will be a primary race between Democrats Ryan Fecteau and former Biddeford City Councilor David Flood. The winner will face Republican Debi Davis.

In House District 12, formerly District 135, which covers Biddeford, Republican and former Biddeford mayoral candidate Perry Aberle will vie against Democrat Martin Grohman for the seat being vacated by Paulette Beaudoin.

For House District 13, formerly District 132, which covers Old Orchard Beach, George Hogan, a former Democratic state representative, will take on incumbent Sharri MacDonald, a Republican.

In House District 14, formerly District 133, incumbent Barry Hobbins, D-Saco, is facing a challenge from former City Councilor and Republican Jeff Christenbury, who was also a key player in the Saco’s successful effort to withdraw from Regional School Unit 23.

In House District 15, formerly District 134, incumbent state Rep. Justin Chenette, D-Saco, will face off against Republican Frederick Fortier.

In Freeport, Pownal and Durham, In Senate district 20, formerly district 15, the incumbent democratic state Sen. John Cleveland will face off against Republican Eric Brakey. In Senate district 21, formerly District 15, Republican Patricia Gagne and Rep. Nate Libby, D-Lewiston, are running for the seat being vacated by Sen. Margaret Craven, who is retiring.

In Senate District 24, formerly District 10, incumbent state Sen. Stan Gerzofsky, D-Cumberland County, is facing challenges from Republican Jennifer Johnson and Green candidate Frederick Horsh. This district includes Freeport and Pownal.

In House District 46, formerly District 105, which includes Durham, Democrat Anne Graham is facing off against Republican Michael Vaughn. And in House District 48, formerly District 106, which covers Freeport and Pownal, incumbent state Rep. Sara Gideon, D-Freeport, will vie against Republican Paul Shultz.

This story was updated to correct the candidates and districts in the Freeport, Pownal and Durham area.

Westbrook, Gorham, Buxton House DistrictsWestbrook, Gorham, Buxton Senate DistrictsScarborough, Cape, South Portland House DistrictsScarborough, Cape, South Portland Senate DistrictsLakes Region House DistrictsLakes Region Senate DistrictsActon, Lebanon, Sanford House DistrictsActon, Lebanon, Sanford Senate DistrictsSaco, OOB, Biddeford House DistrictsSaco, OOB, Biddeford Senate DistrictsFreeport, Pownal, Durham House DistrictsFreeport, Pownal, Durham Senate Districts