Dylan Matthews and Jerusalem Demsas are joined by Vox’s Andrew Prokop (@awprokop) to talk about the midterm elections. More specifically, why the president’s party almost always loses seats in Congress. They discuss the theories of this phenomenon and what, if anything, can work on the margins. Plus, a white paper about Obamacare and the 2010 midterm elections. References: Why the president’s party almost always has a bad midterm The political science of door-knocking and TV ads White paper: “One Vote Out of Step? The Effects of Salient Roll Call Votes in the 2010 Election” Dylan’s old, wrong article arguing that congressional position-taking doesn’t matter much Hosts: Dylan Matthews (@dylanmatt), senior correspondent, Vox Jerusalem Demsas (@jerusalemdemsas), policy reporter, Vox Credits: Sofi LaLonde, producer Dara Lind, engineer Libby Nelson, editorial adviser Amber Hall, deputy editorial director of talk podcasts Sign up for The Weeds newsletter each Friday: vox.com/weedsletter Want to support The Weeds? Please consider making a donation to Vox: bit.ly/givepodcasts Learn more about your ad choices. Visit podcastchoices.com/adchoices