It is very easy to fabricate a seemingly legitimate poll. There is the sampling demographic and even outright fraud of calling people and when someone answers the polling end makes no audio response but the poll worker fills in a survey as if the questions were answered by callee responses. Polling is used to manipulate sheeple. If illary is placed into power, America has ended. Be prepared ...
There is one other thing. If Trump were to win, say by 3 to 4 points, they can always point to their own and other msm polls and claim fraud by GOP ( like they did with John Kerry after early exit polls showed Kerry winning) and demand investigations and recounts.