Former U.S. Vice President Joe Biden continues to lead Democratic presidential contenders, according to a survey Wednesday.

The November poll by CNN found Biden maintains his lead with 28% support among Democrats and Democratic-leaning Independents who are registered to vote.

Biden is followed by Vermont Senator Bernie Sanders with 17%, Massachusetts Senator Elizabeth Warren at 14% and South Bend Indiana Mayor Pete Buttigieg at 11%.

When compared to a national poll in October, Biden’s support dropped from 34% to 28%. Sanders received a one-percent uptick that stood at 17%. Warren’s support was down from 19% to 14%.

Read more: Biden leads among Democrat contenders: poll