It's this one, from Meta War Room, about the "results" we'll get from Iowa this weekend and the light they shed on the race for the Republican nomination and America's larger political dramas.

Read the whole thing, but here is the gist (italics added):

>>Inevitably, news organizations treat this completely meaningless gathering (its results count for nothing) as a major development in the campaign... Moreover, the poll brings out several bad practices that continually infect the way campaigns are waged and covered in America:

1) Sports-writing. This is a term we use to describe the brand of political reporting that treats presidential elections no differently from any other contests, as if they're more or less boxing matches....

2) Predicting. One of the most baffling elements of political coverage in this country is the seemingly fetishistic desire to predict outcomes of things... It's hard to understand what would be compromised if the reporters simply waited a few days to see how much the candidate raised, rather than guess it before-hand with no guarantee of accuracy. But the Ames predicting game has been going on for a month....

3)  Pretending Fake Things Are Important. Campaigns are full of contrived "moments" and "events" that we're told are really important but tell us absolutely nothing about what kind of president a candidate would be....

 So, when you're being inundated in the coming days with all sorts of noise about how important and revealing the straw poll is -- and how so-and-so has so much "momentum" now, while so-and-so now has to drop out -- it's worth remembering that the event doesn't predict anything, predicting things is a waste of time anyway unless you're a gambler, and straw poll performances don't help anyone make judgments about what kind of president a candidate will be. <<

Other than that, it's a great and important event, worthy of all the attention it will get.
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Disclosure: the item quotes my book Breaking the News, which made similar arguments about campaign coverage back in an earlier and more innocent era, so be forewarned. But I was nodding along in agreement before I got to that part.