Nate Silver: “The last time I did a check-in on President Trump’s popularity in November, I noted that the decline in his approval ratings had been remarkably linear. There have been peaks and valleys, sure, which you can correlate with particular news events. But the recovery after every bounce-back has been incomplete, leaving some permanent damage behind.”“So what’s happened since then? Well, let’s just go ahead and update that chart.”Ed Kilgore: Trump’s approval is in free fall.