The chart above reflects the results of the new NBC News / Wall Street Journal Poll -- done between October 27th and 30th of 414 Democratic primary voters. The poll had a margin of error of 4.82 points.
It shows Biden in the lead with 27%, but Warren is close behind with 23% (which is within the polls margin of error). Sanders is third with 19%. No one else even comes close to double-digits.
The poll also questioned 720 registered voters about who they would vote for if the 2020 election was today. Biden had a 9 point advantage over Trump, and Warren had an 8 point advantage.