In a troubling sign for Republicans less than two months before November's elections, Democrats' advantage on the question of which party Americans are more likely to vote for in November is ballooning, according to a new NPR/Marist poll. Plus, how effective are polls at gauging voter outcomes? This episode: Congressional correspondent Scott Detrow, 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.