The Twitter feed of The Hill, which has 3.25 million followers, was by far the worst offender we reviewed, producing more than 40 percent of the tweets that pushed Trump’s misinformation without context over the entire study. It promoted Trump’s falsehoods without disputing them 175 times -- an average of more than eight per day. These numbers are so high in part because the outlet tweets about Trump far more frequently than other outlets, generating about a quarter of the total data. That high volume led to the outlet tweeting about false or misleading Trump claims 200 times. The feed rarely disputes the Trump claims it tweets about, instead simply passing along the misinformation 88% of the time. The Hill also frequently resends the same tweet at regular intervals, not only amplifying his falsehoods, but also making it more likely that the misinformation will stick with its audience through the power of repetition.

Several Twitter feeds controlled by ABC News that we reviewed also stood out, failing to fact-check the president’s misinformation 71% of the time. Many of these cases came when the feeds tweeted Trump quotes and embedded video without additional context during or immediately following Trump events.

ABC News’ main Twitter feed (14.3 million followers) sent 23 tweets promoting false or misleading Trump claims, failing to dispute the president’s misinformation 74% of the time.

The network’s politics feed (733,000 followers) sent 25 tweets promoting false or misleading Trump claims, failing to dispute the president’s misinformation 64% of the time.

The feed for its evening news broadcast, World News Tonight (1.35 million followers), sent 13 tweets promoting false or misleading Trump claims, failing to dispute the president’s misinformation every single time.

The feed for its Sunday political talk show, This Week (166,000 followers), sent 21 tweets promoting false or misleading Trump claims, failing to dispute the president’s misinformation 64% of the time

Notable exceptions

Some feeds entirely avoided passing on Trump’s misinformation over the course of the study. NPR’s main feed, which tweeted only 20 times about Trump quotes, debunked the misinformation in all four false claims it tweeted about.

Other Twitter feeds limited the exposure their audience had to Trump’s misinformation by minimizing their focus on Trump’s comments. For example, the feed for Meet The Press, the NBC News Sunday political talk show, failed to dispute Trump’s falsehoods 83% of the time. But it rarely tweeted about Trump comments, with such tweets making up only 9% of the outlet’s total tweets about Trump. CNN’s main Twitter feed similarly referenced Trump quotes in only 11% of the tweets about him, while doing somewhat better at fact-checking Trump, disputing his false claims 75% of the time.

The Washington Post’s feed disputed Trump’s misinformation at the highest rate of any feed we studied that tweeted about 10 or more false Trump claims. Out of 37 tweets about false or misleading