Blunt was at the U.S. Capitol when Trump supporters stormed it on January 6, 2021, serving as a teller for the 2021 United States Electoral College vote count certification, alongside Senator Amy Klobuchar, Representative Rodney Davis, and Representative Zoe Lofgren. Before the certification, Blunt said he would support the certification of the election, in contrast to his fellow Missouri senator Josh Hawley. While Blunt observed the deliberations over the objection to counting Arizona's votes, led by Ted Cruz, the Capitol was breached. Along with other senators, Blunt was removed from the Senate floor to an undisclosed location as the insurrectionists moved closer to the Senate chambers. He tweeted during the attack that the "violence and destruction" needed to stop and that "This is not who we are as a nation." Blunt stated that Trump "was a part of it", referring to the insurrection.