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WASHINGOTN (WUSA) --Millions of Americans will watch Wednesday night's debate in Denver. But it's just about one in five voters who might change their vote based on what the candidates say.

Here's a look at a new poll from our partners at USA Today:
24 percent of people who call themselves "Obama Voters" say they could change their mind because of what happens in the presidential debates.

It's 18 percent for people who identify as "Romney Voters."

Gary Nurenberg reports the increasingly small number of undecided voters are the ones being targeted during Wednesday night's debate: http://on.wusa9.com/QqL2h1