Maryland Legislative District 13 is one of 47 districts in the state for the Maryland General Assembly. It covers part of Howard County. The district is represented by three delegates in the Maryland House of Delegates.

Demographic characteristics As of the 2020 United States census, the district had a population of 146,321, of whom 109,653 (74.9%) were of voting age. The racial makeup of the district was 59,988 (41.0%) White, 37,765 (25.8%) African American, 663 (0.5%) Native American, 26,004 (17.8%) Asian, 58 (0.0%) Pacific Islander, 8,564 (5.9%) from some other race, and 13,265 (9.1%) from two or more races. Hispanic or Latino of any race were 16,422 (11.2%) of the population.

The district had 94,769 registered voters as of October 17, 2020, of whom 21,901 (23.1%) were registered as unaffiliated, 17,775 (18.8%) were registered as Republicans, 53,677 (56.6%) were registered as Democrats, and 864 (0.9%) were registered to other parties.

Political representation The district is represented for the 2023–2027 legislative term in the State Senate by Guy J. Guzzone (D) and in the House of Delegates by Gabriel M. Moreno (D), Pam Guzzone (D) and Jennifer R. Terrasa (D).

Election history Multi-member Senate district (1967–1975) District A District B District C District D District E District F District G Senator Party Years Senator Party Years Senator Party Years Senator Party Years Senator Party Years Senator Party Years Senator Party Years Harry J. Connolly Sr. Dem. January 18, 1967–January 13, 1971Melvin A. Steinberg Dem. January 18, 1967–January 8, 1975Jervis S. Finney Rep. January 18, 1967–January 8, 1975John J. Bishop Jr. Rep. January 18, 1967–January 8, 1975James A. Pine Dem. January 18, 1967–January 8, 1975Norman R. Stone Jr. Dem. January 18, 1967–January 8, 1975Roy N. Staten Dem. January 18, 1967–January 8, 1975 John C. Coolahan Dem. January 13, 1971–January 8, 1975

Single-member Senate district (1975–present) Years Senator Party Electoral history January 8, 1975–January 10, 1979 John C. Coolahan Democratic Redrawn from District 13-A and elected in 1974.Retired to run for Baltimore County Executive. January 10, 1979–January 12, 1983 Timothy R. Hickman Democratic Elected in 1978.Redistricted to the 12th district. January 12, 1983–January 11, 1995 Thomas M. Yeager Democratic Elected in 1982.Re-elected in 1986.Re-elected in 1990.Lost renomination. January 11, 1995–January 7, 2002 Martin G. Madden Republican Elected in 1994.Re-elected in 1998.Resigned. January 9, 2002–January 10, 2007 Sandra B. Schrader Republican Appointed to serve the remainder of Madden's term.Elected in 2002.Lost re-election. January 10, 2007–January 14, 2015 James N. Robey Democratic Elected in 2006.Re-elected in 2010.Retired. January 14, 2015–present Guy Guzzone Democratic Elected in 2014.Re-elected in 2018.Re-elected in 2022.

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