I hope you realize that national polls mean nothing at this point.
As for Iowa: Santorum, Bachmann, Perry, Paul, Gingrich, and Romney are all polling in double digits in recent polls.
And none are perfect conservatives.
So who are these mythical "single-digit perfect conservative candidates" whose supporters you so detest? Huntsman? Roemer? Johnson?
You are correct, 10% is “double digits”.
Wouldn’t want to short the 2nd tier.