Replication Data for: Congressional support for democratic norms on January 6th

Increasing partisan polarization has characterized American politics for decades. On Jan. 6, 2021, both Republicans and Democrats in Congress expressed their horror at the violent invasion of the U.S. Capitol, leading to the popular perception – emphasized by media accounts – that the attack generated a rare moment of bipartisan unity. We argue that while members of both parties condemned the attack, a marked partisan divide characterized their messaging even as events unfolded. We analyze all 1,861 tweets by members of Congress on Jan. 6 and find that Republicans were significantly more likely to characterize the invasion as a protest grown out of hand, while Democrats described it as an attack on democracy. The results strongly indicate that partisan polarization was alive and well on Jan. 6 and may help to account for Republicans’ shift toward normatively positive portrayals of the day in subsequent months.