Of the declared candidates she's in third place after being passed by Copmala but I'm not sure how great it is for her to be in single digits considering her should be prominence? Without looking to confirm it seems like she was polling better in 2016 as a hypothetical, like 15% or so.
Though in general I'm fairly baffled by the lack of "just picking one" going on in the polls among the non-Biden/Sanders half of the field.