The poll found that 53 percent of Americans have an unfavorable view of the investigator who is looking into possible coordination between the Trump campaign and Russia during the run-up to the 2016 election. The number marks a 26 percent increase since the first poll, conducted in July 2017.
However, the poll still contained some tough numbers for Trump, with 48 percent of voters believing he tried to impede or obstruct the Russia investigation, which is up from 44 percent in February.
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Moscow has denied all allegations of interfering in the 2016 election, calling the accusations "absurd," as well as accusations of collusion with the Trump campaign. Trump has also denied any collusion, calling Mueller's investigation a "witch hunt."