In a surprise defeat that reflects a changing Democratic Party, Boston City Council member Ayanna Pressley has defeated 10-term Democratic Rep. Mike Capuano in Massachusetts' 7th Congressional District. Pressley is poised to become the first African-American woman to represent Massachusetts in the state's congressional history. This episode: political reporter Asma Khalid, political reporter Danielle Kurtzleben, and political editor Domenico Montanaro. Email the show at nprpolitics@npr.org. Find and support your local public radio station at npr.org/stations.