Hillary Clinton Hillary Diane Rodham ClintonJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina MORE leads her Republican presidential rival, Donald Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE, by 9 points in a nationwide Reuters/Ipsos poll released Friday afternoon.

That's the first time Clinton's lead over Trump has dipped into single digits in nearly two weeks in the poll. She leads him 9.4 points compared to 11.2 points last week.

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Clinton is supported by 43.9 percent of likely voters in the latest survey, conducted Monday through Friday, while Trump is supported by 34.5 percent.

More than 1 in 5 voters, 21.7 percent, wouldn't support either candidate.

Both Trump and Clinton are just weeks away from their respective national party conventions, where they are expected to officially be named the nominees.

Trump has trailed Clinton in a series of polls since late May, when the pair saw comparable support in national surveys.

The survey of 1,080 likely voters was conducted June 27 through July 1 with a credibility interval of 3.5 percentage points.