I think it's important to remember that during Chang's term as councilmember, he was campaigning for a congressional seat for over a year.  The last year of his term, he rarely attended neighborhood board meetings in his district (compared to Slom, who attended almost all of them), and he dozed off during council meetings.  

It's fine that Chang knocks on people's doors, but I think it's more important that our senator be present at meetings in which the public expects him to be.