Before joining Cornerstone, Maggie represented Baltimore City’s 43rd legislative district in the Maryland House of Delegates from 1992 to 2023. She was appointed Chair of the Appropriations Committee in 2014, the first woman in Maryland history to serve as Appropriations Chair. Previously, she chaired the Environmental Matters Committee for a decade. Maggie was the Majority Leader in the House of Delegates from 2001 to 2003, the first woman to serve in that post in Maryland as well. She began her political career as the State Director for U.S. Sen. Barbara Mikulski (D-MD) from 1988 to 1992 and the Campaign Manager for the Senator’s 1992 campaign.

In addition to being enshrined in the Maryland Daily Record’s Circle of Excellence as one of Maryland’s Top 100 Women, Maggie has received numerous awards and honors in her 30-year legislative career. In 2022, she received the Casper R. Taylor Founder’s Award in the Maryland General Assembly, was inducted into The Baltimore Sun Business and Civic Hall of Fame and saw the Maggie McIntosh School Arts Fund Bill established in her name. She received an honorary doctorate degree from the Maryland Institute College of Art. In 2015, she was named an Admiral of the Chesapeake, the highest honor a governor can give a Maryland resident for their contributions to the health of Maryland’s environment. She is the first openly LGBTQ member of the Maryland General Assembly and has been the lead on legislation to enact marriage equality and to protect Marylanders from discrimination on the basis of sexual orientation and gender identity. In 2013, she was honored by the Mautner Project for her leadership on the Question 6 Campaign to secure marriage equality.

Maggie received her Master’s of Science degree from The Johns Hopkins University and her bachelor’s degree from Wichita State University.