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.
Zero full-on Biden supporters that I know of (plenty of run of the mill leftists though). Three Trump supporters at work that I'm aware of. A dozen or so Trump supporters within my circles of friends. This is in a very blue area of California.