Im not talking Democrats, i mean people that hardcore Biden supporters, that are fully on board Biden 2020.
When ever i have seen him with 'crowds', they have been dozens of people indoors. At least with Sanders and Warren they had outside rallies with thousands of people.
I remember seeing quite a lot of Hillary bumper stickers leading up to 2016, and still see them even today once in a while.
I have yet to see a single Biden bumper sticker...