“Overnight ratings for the fourth and final night of the conventions. Six networks combined (FNC/CNN/MSNBC/ABC/CBS/NBC). Ratings are for the duration of each nominee’s speech only: Democratic / Biden – 17.5, Republican / Trump – 14.1 … The length of President Trump’s speech, the longest acceptance speech in history, did not appear to have any impact on viewership. Looking at overnight ratings by quarter hour, the ratings held basically steady throughout.”
– Fox Sports EVP Michael Mulvihill via Twitter (lightly condensed for clarity).