Maryland House approves new congressional map as Senate leaders warn of risks

Maryland House lawmakers voted Monday to advance a new congressional map backed by Democrats, a move that has drawn resistance from state Senate leaders who warn it could carry political and legal risks.

The proposal, approved by the Democratic-controlled House, is designed to reshape Maryland’s lone Republican-held congressional district and could alter the balance of the state’s U.S. House delegation.

Democrats currently hold seven of Maryland’s eight seats in Congress. Under the new map...