Did The Prop 8 Rallies Help?

According to a poll taken by Survey USA, California voters are evenly split on this question: "Will the recent rallies held by 'No on Prop 8' protesters ultimately help their cause? Hurt their cause? Or will it not make a difference one way or the other?"

Another question asking "Have the protesters changed your opinion on Prop 8?" has 8% saying "Yes", but there's no indication how the changed opinions break down. I think we need Nate Silver on this.