Joe Biden slipped into fourth place among presidential candidates in the 2020 Iowa caucuses, behind front-runner Elizabeth Warren, Bernie Sanders and a surging South Bend, Ind., Mayor Pete Buttigieg, according to a new poll released Friday.

The Massachusetts senator polled at 22 percent, ahead of Vermont Sen. Sanders at 19 percent, Buttigieg at 18 percent and the former vice president at 17 percent, the New York Times/Siena College poll of likely participants in the caucuses showed.

The survey was more bad news for Biden, whose continuing verbal gaffes and uneven performance on the campaign trail have contrasted sharply with Warren’s energetic campaign style and detailed policy proposals, including the release of her “Medicare for All” plan on Friday.

Biden still leads in most national polls, with the RealClearPolitics average putting him in front with 26.7 percent, followed by Warren with 21.3 percent, Sanders with 16.8 percent and Buttigieg with 7.7 percent.

Most of the other candidates were at 5 percent, according to the website, while the Iowa poll showed Sen. Amy Klobuchar at 4 percent and Sen. Kamala Harris and businessman Andrew Yang at 3 percent each.

The poll surveyed 1,435 registered voters in Iowa and 439 likely caucus-goers and was conducted between Oct. 25 and 30.