Moderation in the Pursuit of Reelection May Not Help: Evidence from the 2018 House Elections By Alan I. Abramowitz
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.