Poll: Clinton holds 12-point lead over Trump
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Hillary ClintonHillary Diane Rodham ClintonBiden to debate for first time as front-runner Top Trump ally says potential Amash presidential bid could be problematic in Michigan Chaotic Trump transition leaks: Debates must tackle how Democrats will govern differently MORE holds a double-digit lead over Donald TrumpDonald John TrumpNew EPA rule would expand Trump officials' powers to reject FOIA requests Democratic senator introduces bill to ban gun silencers Democrats: Ex-Commerce aide said Ross asked him to examine adding census citizenship question MORE nationally, according to a new Bloomberg Politics poll.

Clinton has 49 percent support among likely voters in the November election, with Trump at 37 percent.

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Libertarian 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 has 9 percent support, and 5 percent said they would not vote or were not sure whom they would vote for.

The poll found that 55 percent of respondents said they could never vote for Trump, and 43 percent said they could never support Clinton.

But Trump got better marks on handling of terrorism. Forty-five percent said they would have more confidence in the presumptive GOP presidential nominee if a similar situation to the Orlando mass shooting were to happen a year from now. Just 41 percent chose Clinton, the presumptive Democratic nominee.

The poll surveyed 1,000 adults, including 750 who said they were likely to vote in the November election, from June . The margin of error is 3.6 percentage points among likely general election voters and is 3.1 points for all adults. Additional questions were added after the Orlando shooting Sunday morning.

The poll was conducted after Trump said an Indiana-born federal judge overseeing lawsuits against Trump University may be biased against him because of the judge's Mexican heritage. The poll found that 55 percent of likely voters were very bothered by those comments.

The poll shows a wider lead for Clinton than most other polls. Clinton leads Trump by 4.5 points in the RealClearPolitics average of polls.