In American politics, "Sedition Caucus", "Treason Caucus", or "Seditious Caucus" is a pejorative term for the Republican members of the 117th United States Congress who voted against the certification of Joe Biden's victory in the 2020 presidential election in either Arizona or Pennsylvania. The vote occurred hours after rioters supporting incumbent president Donald Trump stormed the Capitol building to disrupt the vote. The term, referring to a Congressional caucus, does not refer to a formal group. Rather, it implies that members of Congress who voted to object are in favor of or guilty of sedition, and had a direct or indirect role in the Capitol storming. It originated with the media, and has been used by Republicans' political opponents, but also by scholars.