That’s according to social media analysis company Brandwatch.
Brandwatch scores Twitter users on a range of metrics, but mostly how much engagement their Tweets create.
Brandwatch released its yearly list of the top 10 most influential people on Wednesday.
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Despite Tweeting only 13 times in 2018, Swift scored the highest. 98 points out of a possible 100.
Former One Direction band member, Liam Payne, came in second with 97 points and several big names tied for third on the list with 96 points — President Donald Trump, singers Katy Perry and Demi Lovato and reality star Kim Kardashian West.