The Post-ABC poll, conducted largely before Biden’s Thursday campaign announcement, asked whom respondents support in an open-ended format that did not name any of the candidates. The results show notably lower levels of support than produced in polls that ask people to pick from a list of names.

Biden tops the field with 13 percent among Democrats and Democratic-leaning adults, followed by Sanders at 9 percent and South Bend, Ind., Mayor Pete Buttigieg at 5 percent. Sens. Kamala D. Harris (Calif.) and Elizabeth Warren (Mass.) are at 4 percent, while former congressman Beto O’Rourke of Texas is at 3 percent. Sens. Amy Klobuchar (Minn.) and Cory Booker (N.J.) are at 1 percent each.

Support for Biden has ticked up four percentage points since a Post-ABC poll in January that used the same open-ended format. Sanders gained five points in that time, as has Buttigieg, whose name was not volunteered by any respondents three months ago. Support for Harris has dipped four points from January.