Senator Elizabeth Warren and President Trump reignite their fight over her ancestry weeks before the midterms. Plus, the races across the country are tightening before the vote. We look at key races and what they mean for the elections. This episode: political reporter Asma Khalid, political editor Domenico Montanaro, Congressional correspondent Scott Detrow, and national political correspondent Mara Liasson. Email the show at nprpolitics@npr.org. Find and support your local public radio station at npr.org/stations.