Not much has changed lately. States have strengthened or weakened, and then back again. No state has changed sides since July 8. Three states have strengthened enough to take them off the "Battleground" list for now. Missouri, South Carolina, and Wisconsin are currently not "At Risk".
The election is still Obama's to lose. This is particularly true if Florida finally swings to his column, which it is on the verge of doing. Still, the race remains close. To win, Romney must win Florida, Ohio, and Virginia. He need only add one other state to win the election. That could be Colorado, Iowa, or New Hampshire. Of course, that assumes that he keeps the others in his column.
Florida is likely to go Romney, but if Obama can keep Romney on defense in that state, it may be tough for him to pick up the other states he needs. Real changes are ahead. I expect that things will be more volatile once the conventions and debates are held. Also, both campaigns can be expected to bring out their best ads starting in September and October.
All told, still to close to call. Still too long a road to November's election.
Pennsylvania is back to "Safe Obama". Iowa moves to "Lean Obama". No change in the total numbers since July 8.
Pennsylvania is tottering on the brink of being in play for this election. Although still firmly in Obama's column, it inches closer to Romney, perhaps becoming a target state.