Call them maybes!

Several Americans undecided on Obama/Romney

Two months out from Election Day, nearly a quarter of all registered voters in America are either undecided about the presidential race or iffy in their support for a candidate, an Associated Press-GfK poll shows.

These voters could well prove decisive in a close contest. And they will be tough nuts for Barack Obama and Mitt Romney to crack.

Just 29 per cent of them have a strong interest in the campaign, compared with 51 per cent of those who've made up their minds.

So no, they won't be hanging on every word coming out of the national political conventions over the next two weeks.

Who are they? These so-called persuadable voters are more often men than women. They are a bit younger than those who've made up their minds. They have less education and income. And they are far less partisan.

A quarter are independent or unaffiliated, while more than a third consider themselves Democrats and a similar share count themselves as Republicans.

They are folks like Eric Avila, a 35-year-old Democrat from Tampa who didn't vote in 2008, has been unemployed since he was laid off from a sales job four years ago and doubts that either candidate will do much to reduce joblessness.

Avila plans to vote this time, but finds the campaign rhetoric from both sides grating. "It kind of gets on your nerves after a while," he says, "all of this stuff a person's promising, and it just gets forgotten or buried under a whole bunch of other things."

Take that, Barack and Mitt. Their challenge is to figure out what will shift people like Avila firmly one way or the other.

important factor

Ask the 'persuadables' what will be the single most important factor in deciding their vote, and they have a multitude of answers at the ready.

"Whoever runs the cleanest campaign," says one of those surveyed.

"Whoever has the dirtiest ad campaigns on TV," counters another.

A third, who speaks for many, confesses she has "no idea" what will win her over.

How the 'persuadables' ultimately vote could hinge on which issues rise to the top of the campaign.

Romney holds the advantage among these voters on the economy, creating jobs and the federal budget deficit. But on two issues that have recently grabbed the spotlight - social issues and Medicare - Obama is the more trusted candidate among these voters.

Neither Obama nor Romney carries much weight with the 'persuadables', though: half have an unfavourable opinion of each candidate.