Quote from atticus:
No idea, simply repeating what was stated by the guy at Gallup. Gallup went from Romney +5 to Obama +2. Sounds really scientific to me.
Are you talking about a particular state? Because I see Gallup currently at +3 like the others. Perhaps you accidentally looked at the line above Gallup? The line for IBD which is the only poll to show +2 for Obama?
http://www.realclearpolitics.com/epolls/2012/president/us/general_election_romney_vs_obama-1171.html