» Hey, wha’ happen? Warren’s rise may be due in part to an “announcement boost;” she was long-rumored as a candidate, and her official entry in the race may have fired up a contingent of Democratic voters. Perhaps more significant of a factor, however, is Brown’s plummeting popularity. Back in December, he was the 16th most popular Senator in the country, out of 87 polled. Now, Brown is in 61st place, and his favorability has dropped by 25 points.