iran on its nuclear program while saying it remains open to talks. romney supporters were quick to criticize the white house on this front. >> it's another example of a national security leak from the white house. they have done a lot of that. it sounds like the u.s. is taking a position that we're likely to jettison our allies. >> there is a pattern here. we talk, they enrich. it needs to stop. >> well, obama campaign senior adviser david axelrod said he had no knowledge about possible talks, defended the administration's iran policy. >> there is a tremendous disquiet in iran. their currency has dropped in value by 50%. their oil business has dropped by 50%. and they're feeling the heat. and that's what the sanctions were meant to do. >> another question for tonight. how much will this debate matter? in our new poll, 27% of voters tell us the debates have made them more likely to support romney, compared to 24% who said the same of obama.