https://www.vox.com/policy-and-politics/2020/1/25/21081616/bernie-sanders-2020-polls-iowa-caucus

With the 2020 Iowa caucus just over one week away, Sen. Bernie Sanders (I-VT) has another favorable Iowa poll under his belt — one in which he’s leading the field by 7 percentage points.

A new New York Times/Siena College poll, taken between January 20-23 and released Saturday, shows Sanders winning 25 percent of the vote in Iowa — a 6 percentage point rise since Siena’s last survey in October.

The poll found the Vermont senator followed by the race’s two moderate frontrunners: former South Bend Mayor Pete Buttigieg, with 18 percent support, and former Vice President Joe Biden at 17 percent.

Sen. Elizabeth Warren (D-MA), who Siena pollsters found leading the field in October with 22 percent support, saw her polling fall to 15 percent. Sen. Amy Klobuchar (D-MN), who has seen some increase in her level of support nationally and in early states in recent weeks, was found to be fifth in the state, with 8 percent support. The poll’s margin of error is 4.8 percentage points.