For generations, pro-marijuana Californians have hid their dope preference from their parents, their teachers and their co-workers.

And now, perhaps, from their pollsters.

The campaign team behind Proposition 19, which is working to legalize, tax and regulate marijuana for Californians over 21, has noticed an odd trend among public and internal polls on the measure: People are less likely to tell a live person that they support legalizing pot than an automated pollster.

sfgate.com