What do the Iowa results tell us about neighboring states? Will Pete win the rural areas while Sanders wins urban areas?
It's very difficult to tell based on caucus results alone. In 2016, Clinton won rural Iowa whereas Sanders won urban parts; in the rest of the Midwest and neighboring states, it was largely the opposite.
A good example of this is Nebraska. They held both a caucus and a primary in 2016. In the caucus, Sanders won cities like Lincoln and Omaha, while Clinton ran pretty even with him in rural counties. In the primary, the opposite was true; Clinton won Omaha and Lincoln whereas Sanders cleaned up in most of rural Nebraska.
