That's why I said for no reason. As far as I know, there was no huge cataclysmic event yesterday that would have seven percent of the country to change their mind on Obama. And yes, if Obama was tied with Romney on one day and then suddenly leading him by 7 the next day, without some big event, then I would say the poll is suspect as well.
Ok that's true then. My fault if I misunderstood. 7 points is understandable in a week but not a day. One thing that is overlooked in polling though is the margin of error.