All the evidence points to them being highly successful at ballot harvesting/trafficking.
The leftist voting public generally don’t care what the issues are, or who the candidates are, except to prefer the one who is furthest to the left.
It seems that many just want what they perceive as increased freedom to do drugs and smoke pot, and more free stuff from the government given to them.
As long as someone says they will get that, in return for their ballot, they will give the ballot up, which, for example, seems to be what happened in georgia.