Poll: Clinton holds 46-point lead among Hispanics
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Democratic presidential nominee Hillary ClintonHillary Diane Rodham ClintonFive takeaways from the Ohio special primaries Shontel Brown wins Ohio Democratic primary in show of establishment strength READ: Cuomo's defense against sexual harassment investigation MORE leads her GOP rival Donald TrumpDonald TrumpFive takeaways from the Ohio special primaries Missouri Rep. Billy Long enters Senate GOP primary Trump-backed Mike Carey wins GOP primary in Ohio special election MORE by 46 points among Latino voters, according to a poll released Thursday.

Clinton is supported by 66 percent of registered Latino voters surveyed in the Fox News Latino poll, while Trump is supported by 20 percent.

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Clinton's lead has widened by 7 points since a May Fox News poll, when she led Trump by 39 points. 

The former secretary of State continues to hold a huge lead when Libertarian nominee Gary JohnsonGary Earl JohnsonBiden broadened Democratic base, cut into Trump coalition: study New Mexico lawmakers send recreational marijuana bills to governor Judge throws out murder convictions, releases men jailed for 24 years MORE is added to the mix.

Clinton gets 59 percent support in a three-way match-up, with Trump taking 17 percent and Johnson following closely at 16 percent.

Republicans sought to make inroads with Latino voters and other minority groups after 2012 nominee Mitt Romney drew just 27 percent of Latino voters.

That was down from the 31 percent Sen. John McCainJohn Sidney McCainMeghan McCain to produce 'Don't Sweat the Small Stuff' Lifetime movie starring Heather Locklear An August ultimatum: No recess until redistricting reform is done Meghan McCain on Pelosi, McCarthy fight: 'I think they're all bad' MORE (R-Ariz.) drew in 2008 and the roughly 40 percent George W. Bush won in 2004.

There are an increasing number of eligible Hispanic voters, with the Hispanic electorate expected to reach a record 27.3 million in 2016, Pew Research Center projected earlier this year.

The Fox News Latino poll shows that 82 percent of registered Latino voters have an unfavorable view of Trump, while a majority, 55 percent, have a favorable view of Clinton.

Opinions about Clinton have stayed largely the same since the Fox poll in May, while Trump's net favorability has fallen 16 points since then.

Immigration has been a key issue during the presidential race, with Trump vowing to build a wall along the U.S.-Mexico border and deport those in the U.S. illegally.

The survey of 803 registered Latino voters was conducted Aug. 7-10 via telephone with a margin of error of 3.5 points.