So I wondered, what prompted each of these presidents to plummet to their Trumpian lows? The answers show what an entirely different situation Trump is in.

The Iraq death toll was at 2,500; 57 percent of survey respondents told Gallup the war was a mistake . And Bush had just announced that troops would not be withdrawn by the end of his presidency

The nuclear accident at Three Mile Island occurred less than two months ago, on March 28, further stoking panic. The unrest would soon lead Carter to give what has come to be known as his "malaise” speech, in July.

The Iranian Revolution led to a decline in the global oil supply and concerns about a possible repeat of the energy crisis of the early 1970s.

Nixon had just announced that he wouldn't turn over tapes of his conversations with Watergate suspects to the Senate committee investigating the scandal.

The Watergate hearings had been on television since May that year, and White House counsel John Dean had said that he and Nixon discussed the coverup on dozens of occasions

For the first time, a majority — 53 percent — regarded the Vietnam War as a mistake by this point, per Gallup. And the Tet Offensive, which was launched early that year, had become a defining moment in an unpopular war.

The end of World War II brought economic uncertainty, a sharp cost-of-living increase thanks to the end of price controls, a wave of major labor strikes, and shortages — most notably when it came to meat , which doubled in price over a two-week period.

Trump is the exception to this list in many ways. The economy is relatively strong and getting stronger, there is no big war looming, and while Democrats say his administration is already in the midst of a Watergate-esque scandal, we have yet to see anything close to the smoking guns we saw when Nixon's popularity plummeted in the early 1970s.