Clinton, Trump in tight races in Florida, Ohio
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Presumptive GOP presidential nominee Donald TrumpDonald John TrumpGOP congressman slams Trump over report that U.S. bombed former anti-ISIS coalition headquarters US to restore 'targeted assistance' to Central American countries after migration deal Trump says lawmakers should censure Schiff MORE and Democratic front-runner Hillary ClintonHillary Diane Rodham ClintonGOP warns Graham letter to Pelosi on impeachment could 'backfire' Hillary Clinton praises former administration officials who testified before House as 'gutsy women' Third-quarter fundraising sets Sanders, Warren, Buttigieg apart MORE are in close races in Florida and Ohio, according to a new CBS News battleground tracker poll.

In a hypothetical match-up between the two in Florida, Clinton leads Trump by 1 point, 43 percent to 42 percent.

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Clinton has a 5-point advantage over the presumptive GOP nominee, 44 to 39 percent, in Ohio.

In a match-up between Trump and Democratic candidate Bernie SandersBernie SandersOvernight Health Care — Presented by National Taxpayers Union — House Dems change drug pricing bill to address progressive concerns | Top Republican rejects Dem proposal on surprise medical bills | Vaping group launches Fox News ad blitz Democrats have reason to worry after the last presidential debate Krystal Ball on Sanders debate performance: 'He absolutely hit it out of the park' MORE in Florida, the two candidates are tied at 44 percent each. Sanders, however, has a 9-point lead over Trump in Ohio, 48 to 39 percent, according to the poll.

Sanders has an advantage over Trump among younger voters and independents.

In both Florida and Ohio, Trump has at least eight in 10 Republicans backing him. Clinton also has the support of at least eight in 10 Democrats in both states.

According to the poll, 25 percent of those who are backing Clinton in Ohio say they support her because they oppose Trump. About 30 percent of those backing Trump in both Ohio and Florida say they are supporting the candidate because they want to stop Clinton.

The online polls have margins of error of 4 percentage points in Florida and 3.7 points in Ohio.