page_title: 109th United States Congress
section_title: Senate
hierarchical_section_title: 109th United States Congress / Party summary / Senate
context_page_description: The 109th United States Congress was a meeting of the legislative branch of the United States federal government, composed of the United States Senate and the United States House of Representatives, from January 3, 2005 to January 3, 2007, during the fifth and sixth years of George W. Bush's presidency. House members were elected in the 2004 elections on November 2, 2004. Senators were elected in three classes in the 2000 elections on November 7, 2000, 2002 elections on November 5, 2002, or 2004 elections on November 2, 2004. The apportionment of seats in the House of Representatives was based on the Twenty-second Census of the United States in 2000. Both chambers had a Republican majority, the same party as President Bush.
context_section_description: The party summary for the Senate remained the same during the entire 109th Congress. On January 16, 2006, Democrat Jon Corzine resigned, but Democrat Bob Menendez was appointed and took Corzine's seat the next day.
caption: Party standings in the Senate throughout the 109th Congress   44 Democratic senators   55 Republican senators   1 Independent senator, caucusing with Democrats