It turns out that’s the biggest drop in Trump’s net approval that our tracker has ever recorded. To put this into perspective, there have been only two other times when Trump’s net approval rating fell by at least 5 points over an eight-day period: once in February 2017, after he issued executive orders to begin construction of a wall along the U.S.-Mexico border and to suspend the refugee program and prohibit entry for visitors from seven predominantly Muslim countries,2 and then again in March 2017, after Republicans began their legislative efforts to repeal the Affordable Care Act.3 But the lack of sharp drops in Trump’s rating outside of these two episodes isn’t all that stunning, considering that both positive and negative opinions of him are largely baked in.

But now Trump’s tumbling approval rating suggests he is losing some support among his party base and swing voters (his approval rating among Democrats was already abysmal). Take Morning Consult/Politico’s latest survey, which found Trump’s net approval at +51 points among Republicans and -35 points among independents; these numbers might not sound that bad, especially among Republicans, but they were down 15 points among both Republicans and independents from mid-December. Quinnipiac University’s new poll also put Trump’s net approval among Republicans at +51, a decrease from +80 in early December, while independents fell to -37 from -15 in the same period. Additionally, a new survey from Marist College on behalf of PBS NewsHour found Trump at +56 among Republicans and -20 among independents, both down from +83 and -14, respectively, in Marist’s early December poll.