Trend lines from a new national poll revealed an emerging top tier in the Democratic presidential primary, with three of the top candidates on the upswing and the rest of the pack flatlining — or cratering.

Data from Morning Consult, which unveiled a new survey on Tuesday, showed Bernie Sanders, Mike Bloomberg, and Pete Buttigieg receiving steadily increased support among Democratic voters across the country. The three contenders finished first, third, and fourth, respectively, in the latest Morning Consult poll conducted Feb. 4-9. Joe Biden finished second in the survey, but support for the former vice president (and for Elizabeth Warren, who came in fifth) was headed due south.