George W Bush's Republican party has suffered widespread defeats in the US mid-term elections.
The Democrats have pulled off a historic victory to seize control of the House of Representatives for the first time in 12 years.
A number of key seats in the Senate also remain on a knife-edge, where the Democrats need six net gains to also take control there.
They have already made three of those gains and three more states are still neck-and-neck.
The elections were widely regarded as a referendum on the Iraq War and will be regarded as a major indictment of President Bush's controversial foreign policies.