A majority of Americans believe that President Trump's dealings with Russia have included illegal or unethical activities, according to a new poll released just ahead of Trump's highly-anticipated meeting with Vladimir Putin.

The NPR/PBS NewsHour/Marist Poll found that a combined 54% of Americans think the president may have engaged in questionable behavior when it comes to Russia and the Russian president. The breakdown: 25% said they thought Trump had done something illegal, while another 29% said they believed Trump had done something unethical but not illegal.

Another 36% said they did not think the president had done anything wrong, and the remaining 10% said they were unsure.

Those numbers have slightly shifted from the last time the poll asked this question din February. Back then, a combined 49% believed Trump had engaged in illegal or unethical activity, while 40% said did not think the president had done anything wrong.

Additionally, in the most recent poll, a combined 58% of Americans believe that Trump's campaign associates did something illegal or unethical in their own dealings with Russia, while 29% said his associates had done nothing wrong.

"Many Americans believe something went on that was not on the up and up between Trump or his campaign associates and Russia," Lee Miringoff, director of the Maris College Institute for Public Opinion, said in a statement. "Americans are wary that the activities during the 2016 campaign raise a red flag for future U.S. elections."

The poll's release came ahead of Trump's first formal sit-down with Putin on Friday.

The poll surveyed 1,205 adults ages 18 and older from June 21 to 25 and had an error margin of 2.8 points.

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