The problem with internals -- even ones conducted by reputable pollsters -- is that, especially if you are a well-funded organization like a SuperPAC, you can conduct as many as you want and then release only the one that reinforces the narrative you want. (Drug companies use a similar tactic; conduct a bunch of studies on the effects of a drug, only publish the one which has the most favorable results).
Even then, Murphy is only up to a tie, not an outright lead, and considering how narrow Rubio's lead is, considering the polling average and early vote data, we should actually expect some polls to show Murphy ahead. Still no reason to be alarmed.
Why does this simple fact not penetrate people's skulls?
