Are you working with campaign office? They will target for you. GOTV efforts go to great lengths to avoid talking to the other side near the end of an election. It is counter-productive.
Yes. What we are finding is that the list is incorrect. The reason is usually that the owner has rented the house to the people we are encountering.
We do not argue with Obama voters. We do have respectful conversations with undecideds and it has been anything but nonproductive. I have been very unimpressed with republican headquarters.