Sarah Palin delivered a powerful speech last night, but she did not "wing it."
That is what Erick Erickson, citing sources close to McCain, has written on his blog, RedState.
Erickson writes that "the teleprompter continued scrolling during applause breaks. As a result, half way through the speech, the speech had scrolled significantly from where Governor Palin was in the speech."
This claim has been picked up on Drudge and could quickly enter into the insta-mythmaking about a speech that need not be embroidered.