Why was it entered as Obama +2 instead of Romney +7?
Because Perry leads the primary in this poll and Perry trails Obama by 2.
Ah I see.
Yeah, I think it's the best we can do right now: look at the primary polling in each state and use the leader for the general election matchup.
Once there is a Republican nominee, we can modify the old polls and put in the values of the real nominee.
Why? It makes a lot more sense to consistently use one candidate, preferably the one we think will be the nominee or who does the best. Right now I think it makes sense to use Romney, since Perry would be destroyed anyway.
Having a map with Romney v Obama numbers in some states and Perry v Obama in some makes no sense to me. Such a map would tell us nothing, while one with one of the candidates would tell us something.