Obama is to visit three key swing states today, with Romney going one better and travelling to four to fire up their respective supporters and persuade the undecided to cast their vote their way.

It is one of the most closely fought elections in history, with Obama ahead in national polls by 48% to Romney’s 47%, with turn out likely to be a key factor in deciding who wins.

Romney has fired up Republican crowds with talk of a “better future” with Obama telling Democrats that “we have come too far to turn back now”.

Collectively the Republicans and Democrats raised a reported $2billion in campaign funds, making this election the most costly in US history.

The US goes to the polls on Tuesday November 6th, with Romney looking to return the presidency to the Republicans and Obama seeking to avoid being a one term president.

Photo: Getty.