Poll: 4 In 10 Not Locked Onto A Candidate

For all the passion this year's presidential campaign has stirred, a new poll suggests that more than four in 10 voters are still up for grabs.

According to a recent Associated Press-Ipsos poll, 43% of registered voters surveyed have not made final decisions on whom to support. That includes 15% leaning toward Barack Obama or backing him while saying they could change their minds, and 16% tentatively supporting John McCain. Another 8% say they are undecided, and 4% weakly back third-party candidates Ralph Nader or Bob Barr.

A poll by the non-partisan Pew Research Center, conducted in early August and late July, suggests that just three in 10 adults say they are following the campaign very closely.

And in a poll early this month by CBS News, just 18% of uncommitted voters said they'd been paying a lot of attention to the race over the last few weeks.

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