A First for Warren in the Polls

There is a new top dog in Iowa polling, with Sen. Elizabeth Warren having put the nation's former No. 2 politician Joe Biden firmly into the No. 2 spot: She now leads him 22% to 20%, marking the first time the former vice president has trailed in the Des Moines Register/CNN/Mediacom Iowa Poll, CNN reports. That's up seven percentage points for Warren and down three for Biden. Bernie Sanders trails at 11%, but is the only other candidate in double digits; the Vermont senator, however, has dropped five percentage points since the last poll in June. The rest of the field:

• South Bend, Ind., Mayor Pete Buttigieg: 9%
• Sen. Kamala Harris: 6%
• Sen. Cory Booker: 3%
• Sen. Amy Klobuchar: 3%
• Rep. Tulsi Gabbard: 2%
• Former Rep. Beto O'Rourke: 2%
• Tom Steyer: 2%
• Andrew Yang: 2%

The rest of the field garners 1% or less. (Read more Iowa caucuses stories.)