As social media platforms like Facebook and Twitter have become ingrained in political and popular culture, a new Pew Research Center analysis of every tweet and Facebook post from members of Congress since 2015 finds that the congressional social media landscape has undergone vast changes in recent years. These shifts have been especially pronounced on Twitter. Compared with a similar time period in 2016, the typical member of Congress now tweets nearly twice as often (81% more), has nearly three times as many followers and receives more than six times as many retweets on their average post.