Donald Trump. Pool/Getty Images

President Donald Trump needed just 69 days to plunge to a mark that past presidents such as Jimmy Carter, Richard Nixon, and George W. Bush took years to reach: an approval rating of 35% or lower in Gallup's survey.

Trump hit 35% in the Gallup daily tracker on Wednesday. Seven other presidents have hit 35% or below since Gallup began tracking presidential approval ratings during President Harry Truman's administration.

None of those presidents, which also include Truman, Lyndon B. Johnson, Ronald Reagan, and George H.W. Bush, hit a mark that low until at least a year and a half into their first term.

Previously, the president to have reached that point most quickly was Truman, whose approval fell to 33% after 524 days in office. The only other presidents to have reached that point in their first term in office are Carter, H.W. Bush, and Reagan.

If Trump sinks any lower, he will be one of just six presidents to do so, as Johnson and Reagan bottomed out at 35%.

Here's a list of the presidents who hit 35% or lower in the Gallup approval rating, with how many days it took them to get there:

Trump | 69 days

Truman | 524 days

Reagan | 741 days

Carter | 851 days

H.W. Bush | 1,283 days

Nixon | 1,659 days

Johnson | 1,725 days

W. Bush | 1,926 days

Trump's past week featured the failure of the American Health Care Act, the Republican healthcare bill that was pulled from the House floor Friday after it became clear it did not have enough votes to pass. Also last week, FBI Director James Comey confirmed publicly that the bureau was investigating Trump associates in connection with Russia's attempts to meddle in the 2016 presidential election.