Results of the 2010 United States House of Representatives elections in Maryland by district:[2] The district encompasses the entire Eastern Shore of Maryland, as well as parts of Anne Arundel, Baltimore and Harford Counties.

Incumbent Democrat Frank Kratovil ran for re-election against Republican State Senator Andy Harris.

[4] † Internal poll for Kratovil campaign The district comprises parts of Harford, Baltimore, and Anne Arundel Counties, as well as small portions of the City of Baltimore, and has been represented by Democrat Dutch Ruppersberger since 2003; he ran for re-election against Republican Marcelo Cardarelli, a physician.

The district comprises portions of Prince George's and Montgomery Counties, and was represented by Democrat Donna Edwards.

The seat had been represented by Democrat and House Majority Leader Steny Hoyer since 1981.