The poll, released on May 30 by Atlas Intel, found Pete Buttigieg, the former mayor of South Bend, Indiana, and former transportation secretary in the Biden administration, to be the top pick among Democrats who responded to the survey.

A total of 31.5% of self-identified Democrats who responded to the poll said they would vote for Buttigieg for president in four years, according to the poll.

Other surveys in May from firms such as Echelon Insights and McLaughlin & Associates have found Harris in first place in the hypothetical primary, making Atlas Intel’s poll stand out among the rest.

Harris is the third most popular pick among Democrats in the poll, falling behind U.S. Rep. Alexandria Ocasio-Cortez, D-N.Y.