Sen. Bernie Sanders (I-Vt.) has taken a 12 percentage point lead in the Democratic presidential contest, according to an NPR/PBS NewsHour/Marist poll released Tuesday morning. Sanders has the support of 31 percent of Democrats and Democratic-leaning independents, up 9 points from the last Marist poll in December, but coming in at No. 2 is former New York City Mayor Michael Bloomberg, who jumped 15 points to 19 percent. This poll qualifies Bloomberg to participate in Wednesday's Democratic debate, though he won't be on the ballot in Saturday's Nevada caucuses. After Bloomberg is former Vice President Joe Biden at 15 percent, Sen. Elizabeth Warren (D-Mass.) at 12 percent, Sen. Amy Kloubuchar (D-Minn.) at 9 percent, and Pete Buttigieg at 8 percent. Marist conducted the poll Feb. 13-16 among 527 Democrats and leaners, and the margin of error is ±5.4 percentage points.