The 2024 Maryland's 6th congressional district election was held on November 5, 2024, to elect the United States representative for Maryland's 6th congressional district, concurrently with elections for the other U.S. House districts in Maryland and the rest of the country, as well as the 2024 U.S. Senate race in Maryland, other elections to the United States Senate, and various state and local elections. The primary election was held on May 14, 2024. The 6th district is based in western Maryland and the northwest District of Columbia exurbs and outer suburbs. It takes in all of Allegany, Frederick, Garrett, and Washington counties, as well as portions of Montgomery County. Cities in the district include Cumberland, Frederick, Gaithersburg, Germantown, and Hagerstown.
The incumbent was Democrat David Trone, who was re-elected with 54.7% of the vote in 2022. Trone was first elected in 2018, when Democratic incumbent John Delaney retired to focus on his 2020 presidential campaign. Trone did not seek re-election, instead choosing to run for the U.S. Senate to succeed retiring incumbent Democrat Ben Cardin. A wide field of candidates filed for the race to replace Trone, with over 15 in all. Maryland Matters remarked that both Democrats and Republicans would need to find a candidate with a wide appeal, as the 6th district is largely split between suburban and rural areas. The Washington Post further noted that Democrats outnumber registered Republicans by seven percentage points in the district.
The 6th district is considered the most competitive congressional district in the state of Maryland, despite being a moderately blue largely suburban district with a more sparsely populated rural component. While Republicans typically run up large margins in the state's Western Panhandle (Washington, Allegany, and Garrett counties), the district has a slight Democratic lean due to the more heavily populated, strongly Democratic Montgomery County, and the former Republican stronghold of Frederick County, which has trended towards the Democrats in recent elections. Republicans last won the district in 2010, when long-serving Republican Roscoe Bartlett was elected to his final term; he lost re-election to Delaney in 2012 after the district became significantly more favorable to the Democratic Party during redistricting. Democrat Joe Biden won the district with 53.9% of the vote in the 2020 presidential election.
This district was listed on both the National Republican Congressional Committee's Young Guns program and the Democratic Congressional Campaign Committee's Red-to-Blue program. McClain Delaney won the general election on November 5, 2024, defeating Parrott with 53.05% of the vote.
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