A new Gallup poll shows that the number of people who have a favorable impression of Barack Obama has fallen to its lowest point since he became president. Fifty-six percent say they have a favorable impression of Obama, versus 40 percent who say they have an unfavorable impression. (Four percent say they have no opinion.) Historically, a president’s personal favorable rating has often been higher than his job approval rating; right now, Gallup has Obama’s job approval at 52 percent.

In January, just before Obama took office, 78 percent of those surveyed by Gallup had a favorable impression of him, with just 18 percent having an unfavorable impression. By March, the favorable number had fallen to 69 percent, where it would stay virtually unchanged for four months: 67 percent in May, and 66 percent in July. Now, it has tumbled ten points to 56 percent.