The US Congress elections are on a knife-edge as the predicted Republican 'red wave' has not yet materialised - with Democrats containing to win crucial states in the battle for control.
The midterm elections are often seen as a reflection of the public's approval of the reigning President, which led many to predict a Republican domination as confidence in Joe Biden's term has dwindled.
However, the large gains that many experts and pollsters were expecting do not appear to be appearing.
