because people throw the mailers in the trash before looking at them
How does it actually help to do that, to make phone calls, etc?
so are you saying it actually helps to give fellow citizens info on candidates?
no, not for the candidate to knock on doors and make calls.
the candidates always call for volunteers to do this. how does it help your candidate win to do this for your candidate?
Well, the people see that the candidate is a real person. He/she is taking time out just to meet them, making the person feel special and so the person suddenly gains more interest in the candidate because the candidate came and visited.