It’s March 2013. The G.O.P., in tatters, issues a scathing report blaming its electoral failures on an out-of-touch leadership that ignores minorities at its own peril. Just three years later, Donald Trump proves his party dead wrong. Today, how certain assumptions took hold of both parties — and what they’re still getting wrong — heading into the midterm elections.

Unlock full access to New York Times podcasts and explore everything from politics to pop culture. Subscribe today at nytimes.com/podcasts or on Apple Podcasts and Spotify.