So this didn't seem right at first glance. NPR just not covering a primary contest, and especially one as important as Iowa, seems wrong. I was curious and went to check. Sanders didn't even win Iowa.
It's wild to me that the "facts" recorded on the internet vary so wildly from my recollection of events at the time. Perhaps I mistook the "straw poll" for the "caucuses"?
So, I was wrong, but NPR certainly hasn't remained true to their original format.