No, this approach didn't work.
Here is what worked much better:
Hi, my name is Jennifer and I am an unpaid volunteer who is supporting Congressman Ron Paul for President. I am not very good at these calls, I am terribly nervous. so um, have you heard of Ron Paul? If not, I launch into a list of things he is for or against, if so, I ask if they have specific questions.
They are much nicer to me if I tell them I am scared and nervous. (This may only work for girls though.)
One lady told me I was the only person of all the callers who she let talk to her because I was upfront with her.
One lady started by saying "why should I vote for a guy who has no chance of winning" to (an hour later) how can I get signs for my lawn and I can't wait to tell my friends about RP, even the democrats. I think they will like him too. I will go to the straw poll with the tickets Mitt Romney sent me and vote for RP. He must be the best kept secret in this campaign.