Biden-related Twitter chatter is also more left-leaning, but the contrast is less stark.
What about the polls?
In overall volume, left-leaning criticism of Trump dominates over left-leaning support for Biden, with right-leaning Trump support and Biden criticism bringing up the rear.
Our observations sync up with the national polls of the two candidates’ approval ratings: People are generally more in favor of Biden than Trump, and more anti-Trump than they are pro-Biden – as demonstrated by this 538 chart:
To conclude – while Twitter is not real life and does not represent the opinions of everyday people, it nevertheless reflects activists’ and elites’ understanding of how the race is shaping up.