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Abstract. On 20 October 2020, prior to the US presidential election, Twitter modified its user interface for sharing social media posts. In an effort to re

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Prior to the 2020 US presidential election, Twitter modified its user interface for sharing social media posts, hoping to slow the spread of misinformation. Using extensive data on tweets by US media outlets, this column explores how the change to its platform affected the diffusion of news on Twitter. Though the policy significantly reduced news sharing overall, the reductions varied by ideology: sharing of content fell considerably more for left-wing outlets than for right-wing outlets, as Conservatives proved less responsive to the intervention.