Moderation in the Pursuit of Reelection May Not Help
KEY POINTS FROM THIS ARTICLE — District partisanship was by far the strongest determinant of the results of House elections in 2018, with Republican candidates typically running behind Donald Trump’s 2016 margins in all types of districts. — Whether incumbents under- or over-performed was unrelated to ideology. Moderate Republicans actually were more likely to be defeated than those with solidly conservative records. How the 2016 presidential results explained the 2018 House results In my book, The Great Alignment: Race, Party Transformation and the Rise of Donald Trump, I argue that the United States has entered a new era of electoral competition in the 21st century. The most important characteristics of 21st century elections are partisan polarization and nationalized elections, and the results of the 2018 House elections provide striking evidence of both. The outcomes of House contests in 2018 were overwhelmingly determined by two factors — the partisan composition of House districts and the unpopularity of President Trump in many of those districts, including some that had supported him in 2016. Democrats gained at least 40 seats in the House with one disputed election in North Carolina still undecided. This was their largest seat gain since the post-Watergate election of