Gallup has a new warning for President Trump: his approval ratings are historically bad.

With charts showing a steady decline from 45 percent to 35 percent, Gallup has issued a long report that indicated the president is heading toward having the lowest yearlong average rating ever.

His average is currently 39 percent approval, and Gallup said:

  • No other president has had a full-term average of less than 45 percent approval (Harry Truman) while in office.
  • No other president has averaged less than 49 percent approval during his first year in office.
  • Only three presidents -- Bill Clinton (49 percent), Ronald Reagan (57 percent) and Barack Obama (57 percent) -- have averaged less than 60 percent job approval in their first year.

And it can get worse, said the polling outfit, arguably the most respected in America.

"There is precedent for Trump's support to erode further, as five of the other 12 post-World War II presidents -- Truman, Richard Nixon, Jimmy Carter, George H.W. Bush and George W. Bush -- registered sub-30 percent job approval ratings during their presidencies. Each of those instances occurred near the end of the president's administration -- in his final or penultimate year in office. If Trump falls below 30 percent approval before his third year in office, he will set another dubious record," said Gallup.

Democrats are mostly to blame for the low approval ratings, said Gallup, since only 7 percent approve of the president's job compared to 78 percent of Republicans. Said Gallup:

The chances of Trump's ratings improving substantially, however, are hampered by his low support among Democrats, a major reason why his overall approval is so low. In Aug. 21-27 Gallup polling, an average of 7% of Democrats said they approve of the job Trump is doing.

Single-digit approval ratings of the president are not uncommon in the recent era of highly polarized job approval ratings. Obama and George W. Bush registered many single-digit approval ratings from Republicans and Democrats, respectively, while in office. But neither did so for the first time until much later in his presidency -- Obama in October 2010, nearly two years into his presidency, and Bush in October 2004, during his fourth year in office.

In contrast, Trump fell below 10% job approval among Democrats his second full week in office. Although Trump has seen some approval ratings among Democrats of 10% or higher since then, he has not done so since the week of April 24-30.

Paul Bedard, the Washington Examiner's "Washington Secrets" columnist, can be contacted at pbedard@washingtonexaminer.com