Dan was first elected to the Maryland House of Delegates in 1994 and was re-elected in 1998, 2002, 2006, 2010, and 2014. After 24 years in office, Morhaim chose not to run for re-election. During legislative career, Delegate Morhaim served on numerous committees including House Judiciary Committee (2017- now), Health and Government Operations Committee (2004-2016) Environmental Matters Committee (1994-2004), the Joint Committee on Biotech and Technology, the Joint Committee on Behavioral and Opioid Abuse Disorders, the Joint Committee on Open Government, and the Commission to Modernize State Procurement.