His disapproval rating was 54 percent in both surveys.
Even four months later, after the vast majority of Americans had heard about Watergate and two of the president's top aides had resigned, Nixon's approval stood at 48 percent ― higher than Trump has achieved at any point in his presidency, according to Gallup. As voters hear more about the firing, sentiment on the subject is moving away from Trump. Meanwhile, a Quinnipiac University poll conducted before Trump fired Federal Bureau of Investigation director James Comey last Tuesday showed the approval rating at a meager 36%.
The New York Times reported on Tuesday that Trump attempted to influence the FBI investigation into Russian ties to the Trump campaign after former national security adviser Michael Flynn was forced to resign for lying about his contact with Russian ambassador Sergey Kislyak.
Half of registered voters disapprove of the job Donald Trump is doing as president.
Trump dipped under 40 percent in mid-April.
The Trump administration found itself in more trouble on Monday night, when The Washington Post claimed in a report that the president shared classified information with Russian Foreign Minister Sergei Lavrov and Russia's ambassador to the US, Sergei Kislyak, during a White House meeting last week.
Perhaps more worrying for the president - and for Republican members of Congress ahead of the 2018 midterm elections - is a declining strength in support among the voters who elected him. Seventy-nine percent of Democrats disapprove of the job Trump is doing.
Not much is going right in the White House at the moment. In the new poll, however, there is an uptick in the percentage who think Trump's action was improper.
The new survey shows a plurality of voters continue to oppose the new GOP health care bill. In general, people surveyed also agreed that corporations don't pay their fair share of taxes, with 59% saying they pay too little.
The poll was conducted among 1,500 adults by means of phone interviews with a three percentage point margin of error.
Morning Consult is a nonpartisan media and technology company that provides data-driven research and insights on politics, policy and business strategy.