Sarah Palin: Is she running?

So she spoke yesterday and had people wondering again if she is going to run for President. Did she give a deliberate clue or was there an error in the use of her language? You see she said "I can win!" responding to questions from reporters. She didn't say, "I could win". There is a difference in meaning. The question is though did she make a deliberate statement of intention of running or did she mean she "could" win if she ran, and hasn't made up her mind.

I think it was an unconscious reflection of her intention. How would you interpret her use of can versus could?