Elections were held in the United States on November 2, 2004, during the early years of the war on terror and after the 2003 invasion of Iraq.

Foreign policy was the dominant theme throughout the election campaign, particularly Bush's conduct of the war on terrorism and the 2003 invasion of Iraq.

Bush became the first president since Ronald Reagan in 1980 to see his party gain seats in both Houses of Congress during a presidential election year.

Republican incumbent President George W. Bush was re-elected, defeating Democratic Senator John Kerry from Massachusetts.

Summary of the 2004 United States Senate elections results Sources: Republicans gained a couple of seats in the House, mainly due to the 2003 Texas redistricting.

[4][5] Democrats performed better than Republicans overall at the state-legislative level, despite their defeat in the concurrent presidential election, winning control of eight additional chambers.

Favorable redistricting enabled the Democratic takeover of the Montana Legislature and their retaking of control of the North Carolina House of Representatives, which was previously tied.