Over the years, partisan rancor in the United States has increased dramatically, particularly during presidential debates. As you can see here, in this sentiment analysis provided by Rolfe A. Leary through a study of Rev’s transcripts, both U.S. Senator Mitt Romney and Former President Obama spoke generally much more positively than their contemporaneous counterparts in President Donald Trump and Former Vice President Joe Biden.

Click on the images to view them full screen. 

Sentiment analysis contributed by Rolfe A. Leary.