List of new members of the 109th United States Congress

The 109th United States Congress began on January 3, 2005. There were nine new senators (two Democrats, seven Republicans) and 40 new representatives (16 Democrats, 24 Republicans) at the start of its first session. Additionally, one senator (a Democrat) and six representatives (two Democrats, four Republicans) took office on various dates in order to fill vacancies during the 109th Congress before it ended on January 3, 2007.