Hillary ClintonHillary Diane Rodham ClintonPelosi's archbishop calls for Communion to be withheld from public figures supporting abortion rights Hillary Clinton: Biden less 'constrained' than Clinton and Obama due to prior administration Biden's unavoidable foreign policy crisis MORE and Donald TrumpDonald TrumpCaitlyn Jenner on Hannity touts Trump: 'He was a disruptor' Ivanka Trump doubles down on vaccine push with post celebrating second shot Conservative Club for Growth PAC comes out against Stefanik to replace Cheney MORE are in a dead heat in the battleground state of Ohio, according to a new poll released Thursday.

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The Suffolk University survey found Clinton and Trump tied at 44 percent, with 11 percent of likely voters still undecided.

When the race is a four-way contest with Libertarian nominee Gary JohnsonGary Earl JohnsonNew Mexico lawmakers send recreational marijuana bills to governor Judge throws out murder convictions, releases men jailed for 24 years On The Trail: Making sense of Super Poll Sunday MORE and presumptive Green Party nominee Jill Stein, Clinton leads Trump by 4 points, 43 percent to 39 percent. Johnson gets 5 percent, Stein receives 1 percent, and 12 percent are undecided.

The survey was released on the last day of the Republican National Convention in Cleveland, hours before Trump will officially accept the GOP presidential nomination.

Trump and Clinton, the presumptive Democratic nominee, both have negative favorability ratings. Clinton is viewed favorably by 41 percent and unfavorably by 51 percent, and Trump 38 percent favorable to 53 percent unfavorable.

“These largely negative views of the candidates come despite heavy Clinton campaign advertising in Ohio leading up to the Republican Convention and Trump’s efforts to humanize his candidacy with multiple prime-time speeches from family members,” said David Paleologos, director of the Suffolk University Political Research Center.

“The Ohio-based Republican convention might have been expected to give Trump a bump among that state’s voters, yet their dislike of both major-party candidates is translating into unease about the upcoming election,” Paleologos added.

The poll was conducted from July 18 to 20 and surveyed 500 likely Ohio voters via phone. The margin of error was 4.4 points.