It's just more: it's not what you know, but who you know. The polling/electioneering data slant is a great door opener as most politicians would sell their soul (if they still had one) for better polling data.
Now that we have computers powerful enough modelling based on statistical extrapolation has gone from being merely fashionable to seemingly essential and the provisos that should accompany such things ignored. The models are now so detailed that they increase the illusion of control. Even though we know forecasts don't give us control of the weather it's difficult to shake off the feeling they do.