On January 6, 2021, Zeldin objected to the official certification of the results of the 2020 presidential election in Congress. A violent, armed mob of Trump supporters stormed the U.S. Capitol that day, inspired by allegations of election fraud. Zeldin disavowed the violence and defended himself against protesters at his Patchogue office who linked his embrace of election-fraud theories to the Capitol attack and called on him to resign. On January 7, he publicly acknowledged for the first time that Biden would be the next president.