Maryland

State Redistricting Info Maryland

MD 2022 Congressional Districts

enacted April 4, 2022

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MD 2022 Legislative Districts

enacted January 27, 2022

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Overview of 2020 Redistricting

Maryland's 2020 redistricting process featured two parallel map-drawing entities: the Legislative Redistricting Advisory Commission (LRAC) – a panel convened by the Senate President and House Speaker, and the Governor's Citizens’ Commission. While the citizens' commission did not have any state constitutional authority to enact a map, it produced and recommended congressional and legislative maps on behalf of the Governor. Under State law the Governor is only required to introduce a legislative map.

Maryland’s congressional map took two tries to become final. During a December 2021 special session, lawmakers overrode Governor Larry Hogan’s veto and enacted the Legislative Redistricting Advisory Commission plan (HB 1) on December 9, 2021. Republican voters immediately challenged the map in Parrott v. Lamone and a companion case, alleging an unconstitutional partisan gerrymander. Senior Judge Lynne Battaglia agreed, striking down the plan on March 25 2022, and giving the General Assembly five days to redraw it. Legislators responded with SB 1012, a court-ordered revision adopted on March 30 2022. Governor Hogan signed it into law on April 4 2022, and the parties withdrew their appeals, making the second map the governing plan for the 2024 and 2026 elections.

State legislative lines followed the constitution’s built-in procedure. On January 27 2022, the legislative map (Senate Joint Resolution 2) - drawn by LRAC was adopted by the General Assembly. The Governor’s separate proposal (the Citizens’ Commission plan) was introduced as Senate Joint Resolution 3 but was never enacted. Within the constitution’s 15-day window, four petitions, including those by Del. Neil Parrott and Del. Kathy Szeliga, were filed directly with the Maryland Court of Appeals, challenging the plan’s compactness and county splits. Special Magistrate Alan Wilner recommended upholding the map, and the Court of Appeals unanimously affirmed on April 13 2022, clearing the way for the plan’s use beginning with the 2022 elections.

last updated: July 2025

2020 Timeline: Congressional Map

Nov. 3, 2021: The Maryland Citizens Redistricting Commission adopted final congressional and state legislative maps.

Nov. 23, 2021: The Maryland General Assembly's Legislative Redistricting Advisory Commission adopted a final congressional map

Dec 9 2021: The General Assembly overrides Gov. Hogan’s veto and enacts the LRAC congressional plan (HB 1) in a special session.

Dec 21 2021: Parrott v. Lamone partisan-gerrymander suit is filed.
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Dec 23 2021: Szeliga v. Lamone lawsuit is filed (later consolidated with Parrott).

Mar 25 2022: Senior Judge Lynne A. Battaglia strikes down the December map and orders a redraw by Mar 30.

Mar 30 2022: The General Assembly passes a court-ordered replacement map (SB 1012) within the five-day deadline.

Apr 4 2022: Gov. Hogan signs the revised map; both sides withdraw appeals, ending the litigation.

2020 Timeline: Legislative Maps

Nov. 3, 2021: The Maryland Citizens Redistricting Commission adopted final congressional and state legislative maps. The governor accepted the citizens' commission's proposed maps. Legislative maps were submitted to the legislature on the first day of the regular session in January.

Jan. 7 2022: The Legislative Redistricting Advisory Commission released its final recommended map of Senate and House districts for consideration in the upcoming regular legislative session beginning on Jan. 12

Jan 27 2022: The Maryland General Assembly enacted new state legislative districts with final approval in the House of Delegates. The Senate passed the map on Jan 20th. The map is enacted as a joint resolution and does not require the governor's signature

Feb 10 2022: First of four petitions (In re 2022 Legislative Districting, e.g., Fisher/Kipke/Szeliga) filed, challenging the plan’s compactness & county splits.

Feb 11 2022: Court of Appeals extends 2022 candidate-filing deadlines while the challenges are pending.

Apr 4 2022: Special Magistrate Alan M. Wilner recommends that the high court deny all four petitions and leave the map intact.

Apr 13 2022: The Maryland Court of Appeals (now Supreme Court of Md.) unanimously upholds the Legislative Districting Plan of 2022, closing the cases.

Who is Responsible for Redistricting in Maryland?

The state legislature has ultimate responsibility for redistricting in Maryland. However, the state constitution does require the governor to redraw the state's legislative districts and present them to the legislature at the beginning of the legislative session in which redistricting maps are considered. By tradition, the governor also presents a congressional map for consideration as well. The state legislative map automatically becomes law if the General Assembly does not pass an alternate map by the 45th day of the legislative session. The legislative district map is adopted as a resolution and cannot be vetoed by the governor. The congressional map must be considered as a bill, and the governor may veto it upon passage.

Deadline for Redistricting

Population and Number of Representatives

2020 Population: 6,177,224 Congress: 8 State Senate: 47 State House: 141

Pursuant to Maryland law (the No Representation Without Population Act of 2010 - SB 400HB496), Maryland census data must be adjusted to reassign Maryland residents in correctional institutions to their last known address and to exclude out-of-state residents in correctional institutions from redistricting. Maryland's adjusted population for redistricting in 2020 was 6,175,403

State Redistricting Website(s)