You nailed it.
I studied propaganda in college.
It’s all due to belief and ultimate behavior. Think of someone who believes they will fail a test. If their friend keeps telling them they will fail. They will ultimately fail, more often than not (and then say “You called it.”).
Same thing here. Initially 43% were on the Obama train. Then every day (drip drip drip) they log onto Yahoo and see Obama love-fest. They turn on The View and it’s all Obama. Etc Etc.
They then say, “Dammit, I’m in too!”
In other words, a prophecy declared as truth when it is actually false - may influence people so that their reactions ultimately fulfill the once-false prophecy.
But given RAS originalparty party affiliation weighting (DEM +3) absolutely nothing has changed!!!!