Republicans and Democrats are in a tight race for control of the US Congress, as counting continues following the mid-term elections.

Republican are favoured to win the House of Representatives, but the fight for the Senate is on a knife-edge. The US Congress is made up of two parts - the House of Representatives and the Senate.

Republicans had hoped for a "red wave" of victories, but many key battlegrounds are too close to call.

Democrats won a key Senate race in Pennsylvania but Republicans need to gain just one more seat overall to take control of the Senate.

The party are still favoured to win the House of Representatives, although Democrats are putting up resistance in some races.

All 435 seats in the House of Representatives and 34 of the 100 seat Senate were up for grabs. The results of other key Senate races in Wisconsin, Arizona and Nevada were also still in play.

President Joe Biden is not on the ballot, the midterms will shape the fate of his agenda. If Democrats lose control of either the House or the Senate, Republicans will be able to block his plans.

Former president Donald Trump, who is expected to announce he will run for president in 2024, has seen some of his endorsed candidates fail.