Biden has the backing of about a quarter (26%) of registered voters who are Democrats or Democratic-leaning independents, with Vermont Sen. Bernie Sanders at 20%, Massachusetts Sen. Elizabeth Warren at 16%, South Bend, Indiana, Mayor Pete Buttigieg at 8% and former New York City Mayor Michael Bloomberg at 5%. Three candidates hold 3% support each in the poll: businessman Andrew Yang, and Sens. Cory Booker of New Jersey and Amy Klobuchar of Minnesota…

Compared with a year ago, Biden’s support is just a bit lower (33% said they backed him in December 2018, 7 points better than his current backing), while Sanders’ is just a bit higher (14% chose Sanders last December). Warren is the only candidate tested in both surveys to move double-digits in the last year (up 12 points from 4% a year ago). Buttigieg hadn’t yet made the list of contenders, and 11 candidates tested in the survey last December have since opted out of the race, including two — former Texas Congressman Beto O’Rouke and California Senator Kamala Harris — who had landed in that poll’s top six.

Overall, the contours of the race for the Democratic nomination remain fairly similar to where they have been recently. Biden leads among non-white voters, while whites are more evenly split between Biden, Warren and Sanders, with Buttigieg not far behind.