Polls are manufactured. Have you bothered to even evaluate their methodology and demographic swath? Polls are increasingly obsolete and the results of the past few years bear it out. When you're relying on landline to get the vast majority of respondents you're going to not be very close to actual voting results. Rands support comes hugely from the demo that has no landline. Rand is certainly going to get far more than 5% in the caucus, especially with the schools being in this year and caucus' on campus. Is he going to win Iowa? Probably not, but he's certainly going to get at least 15%. Where that puts him who knows, but that's his floor.
You act like polls and the polling companies are infallible.
PS: This is going to sound crude and a bit heartless, but I can't wait til the old fogies die. The under 40 generation votes vastly different than the over 40s (and over 55's especially). No, I don't want any of our older supporters to die, but those other douches in the GOP I could care less. Neg me. I suspect the GOP is either going to die off in 15-20 years or be much different than it is today.