New poll: Clinton widens lead over Trump

Hillary ClintonHillary Diane Rodham Clinton'Teflon Don' avoids the scorn of the 'family values' GOP — again Don't expect Trump-sized ratings for Democratic debates Ocasio-Cortez on Biden: 'I think that he's not a pragmatic choice' MORE widened her lead over Donald TrumpDonald John Trump2020 Democrats spar over socialism ahead of first debate Senate passes .5 billion border bill, setting up fight with House 'Teflon Don' avoids the scorn of the 'family values' GOP — again MORE nationally heading into the Republican National Convention, a new poll released Sunday shows.

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The CNN/ORC poll shows Clinton leading Trump, 49 percent to 42 percent. In the same poll conducted last month, Clinton led Trump 47 percent to 42 percent. 

But in a four-way match-up with Libertarian Party presidential nominee Gary JohnsonGary Earl JohnsonAmash won't rule out Libertarian challenge to Trump Buzz grows Amash will challenge Trump as a Libertarian Potential GOP primary challenger: Trump's 'contempt for the American people' behind possible bid MORE and Green Party candidate Jill Stein, both Trump and Clinton lose ground.

Clinton carried 42 percent, while Trump had 37 percent, Johnson had 13 percent and Stein had 5 percent. 

That's a 4-point increase from the same poll last month for Johnson.

The poll also shows Trump gaining more support among Republican voters, with 56 percent saying they prefer him as the nominee over someone else, compared to 51 percent in June. 

The new poll was conducted from July 13 to 16 among 1,013 adults, including 872 registered voters, and has a margin of error of 3.5 percentage points. 

An NBC News/Wall Street Journal poll also released Sunday morning shows Clinton with a 5-point lead over her likely general election rival in results unchanged since June.

An ABC News/Washington Post poll released Sunday shows Clinton with 47 percent support nationally, while Trump has 43 percent.