Why did Democrats lose seats in the 2020 elections? More incumbents ran in more competitive districts.

Despite expectations that they would ride Joe Biden’s successful presidential election coattails to an increased majority in the US House of Representatives, the Democrats are likely to find themselves with a reduced majority heading into the 117th Congress. Ryan Williamson and Jamie Carson write that moderates likely lost their seats in this election because they were defending very competitive and often Republican-leaning districts in a nationalized election. With this in mind, they comment that Democrats must now consider how to promote their often diverse messages in ways that satisfies both the progressive and more moderate parts of the party.