General Assembly of Maryland | Department of Legislative Services | Executive Branch | Judicial Branch  
Reapportionment and Redistricting

Legal Requirements

The U.S. Constitution and the state constitution requires Maryland to redraw its congressional and legislative district lines every 10 years following the census to maintain equal population. The Supreme Court ruled in Wesberry v. Sanders that Article I, Section 2, of the U.S. Constitution requires congressional districts to be as equal in population as practicable. The 14th Amendment and Article III, Section 4 of the Maryland Constitution requires legislative districts be of substantially equal population.

Redistricting Process in Maryland

Marylandís constitution also lays out the process by which legislative districts are redrawn. Article III, Section 5 requires the Governor to conduct public hearings and introduce a legislative district plan on the first day of the legislative session in the 2nd year following each census. This will occur on January 11, 2012. The plan takes effect on the 45th day of the legislative session unless the General Assembly enacts its own plan before the deadline.
The Governor is not legally required to draft a congressional plan, however, the Governor traditionally introduces a congressional plan to the General Assembly for consideration. This year, a special session is anticipated to finalize congressional districts in time for the 2012 election cycle.

Adjusted Data in Maryland

Chapter 67 of 2010 requires that population counts used to create legislative districts for the U.S. Congress, General Assembly, and county and municipal governing bodies exclude incarcerated individuals who were not State residents prior to their incarceration in either State or federal correctional facilities and that incarcerated individuals who were State residents prior to their incarceration be counted as residents at their last known address.

Maps    Redistricting Plan Viewer

2002 Court of Appeals Legislative District Plan
(2010 Adjusted data)

2002 Governor's Congressional Plan
(2010 Adjusted data)

Congressional Plan
(SB 1 of Special Session 2011)

2011 Legislative District Plan
(Proposed by the Governorís Redistricting Advisory Committee)

Governors 2012 Legislative Redistricting Plan
(SJ 1)

2012 Congressional Districts To view reports and tables on the current congressional and legislative plans, visit the Department of Planning's Redistricting page.

Redistricting 101
Redistricting in Maryland
Governorís Redistricting Advisory Committee

Related Links
General Assembly Hearing Schedules
Contact Department of Legislative Services
Department of Planning
State Data Center
2010 United States Census

The redistricting process for this decade for both congressional and legislative districts is completed.

This page will be updated only when or if there are new developments.

General Timeline

March 2011Census Data Released
July 2011Governorís Redistricting Advisory Committee appointed
Summer 2011Governorís Committee conducts public hearings
Late Summer 2011Governorís Committee recommends Congressional map
October 2011Special Session on Congressional Redistricting
Late Fall Ė Early Winter 2011Governorís committee recommends a Legislative Plan
December 2011Governor may hold an additional public hearing on the Committeeís recommendations
January 11, 2012 *Governor introduces a legislative districting plan as a joint resolution on the first day of the regular session of the General Assembly
February 24, 2012 *Governorís legislative plan automatically becomes law if the General Assembly does not enact its own plan.
* Required by Law

Committee Public Hearings

The public hearings of the Governorís Redistricting Advisory Committee have been completed. To view public submissions to the Committee visit the Maryland Department of Planning's Redistricting website and click on Third Party Plans.
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