I don't live in SF, but about 30 miles away, so I didn't vote on it (I voted about 10 days ago by permanent absentee ballot). It is a city measure (the city and county of SF .
It says that they won't arrest anyone for prostitution, there are no provisions to go after sex-slaves rings (big in the area -they have busted housed with 30 or more Asian prostitutes in them in other places in the area) or child prostitution.
The mayor, DA, and neighborhood groups are against it.
I would vote no. SF is enough of a cesspool as it is.