The story

Sens. Barack Obama and John McCain are virtually tied in some of the key battleground states that could decide the presidential election.

With six weeks until Election Day, and just days before the first debates, the two candidates are running tight races in Florida, Ohio and Missouri, according to polls released Sunday.

McCain holds a razor-thin one-point lead in Florida, ahead of Obama 47-46 percent, according to CNN's poll of polls. Read full article »

CNN's Alexander Mooney and Mary Snow contributed to this report.

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