The US presidential race is into the final bend of the track, and the two rivals have been cramming in as many marginal states as possible over the weekend.
Each lost no time on Saturday in attacking their opponent – but they did so by poking fun at each other.
Barack Obama, who began the day in Ohio, has said Tuesday’s vote is about “two different visions of America”.
“Governor Romney is a very talented salesman. In this campaign he has tried as hard as he can to repackage the same policies that didn’t work and offer them up as change. But you know here is the problem, Ohio, we know what change looks like. And what he is offering ain’t it,” he told supporters.
The Republican candidate was due to visit three states on Saturday to hammer home his message of lower taxes and a large cut in the federal budget.
He has appealed to people to vote for “love of country”, and has described the latest jobs report as evidence that the economy is at a standstill.
“I need you to spend some time in the next 3 days to see neighbours, maybe ones with an Obama sign in front of their home and just go by and say ‘Look, let’s talk this through a bit because, you see, President Obama came into office with so many promises and he has fallen so far short’,” he told a crowd in New Hampshire.
One opinion poll released on Saturday puts Romney on 46% support nationally, one point behind Obama’s 47% – meaning they are virtually neck and neck given the margin for error.
The Republican needs to win a majority of the key swing states, given Obama’s expected hold in the larger states.
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