Politicos have observed similarly divided audiences in the past but with stronger reviews. In Trump’s 2017 and 2018 speeches, Republicans outnumbered Democrats by just five percentage points in CNN’s sample.

Despite this, Trump received stronger reviews in those speeches compared to Biden’s on Thursday: 78 percent positive (including 57 percent “very” positive) in 2017, and 70 percent positive reviews (including 48 percent “very” positive) in 2018.