Which counties are the ones to watch during the Iowa caucuses?

FiveThirtyEight elections analyst Nathaniel Rakich speaks with Galen Druke about which counties are the ones to watch as Iowa caucus results come in.
1:36 | 02/04/20

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Transcript for Which counties are the ones to watch during the Iowa caucuses?
Happy Iowa caucus day from the 530 news room results from the Iowa Caucuses are going to be coming and pretty stared. So Wendy do you view it some sense of what to look at when we get results from different counties in the state of Iowa. What kind of voters reside there and to give us a sense of you know how the vote is lining up so what county should we keep. Our. So again and I am looking at three counties in particular I want is Cole county which is the biggest county in Iowa it's going to Moines is it's worth 392. State delegates tonight which is by far the most of any county so. Obviously any candidate wants to do well there. I'm also looking at Dallas County which is just the west of Des Moines. This is aware a lot. Higher educated wealthier voters live in the suburbs of the morning an excerpt. And this is a place where I think that a judge in Warren need to do really well and then finally I'm also looking at Johnson County which is pretty east is where Iowa City is in the University of Iowa it's kind of called the people's republic a violent because it's so far the last there's a place where Sanders could do really well he won by nineteen points over Hillary Clinton there and my sixteen. And somewhere I think Sanders and Warner book and one allotments. And. The suit to be clear up until this point we have a lot of polling information about how different demographics. Like are seeing the candidates and what the preferences are but this will be the first I was actually reported as a vote sour. Paparazzi reports exactly have some idea who makes up the base Sanders by Indonesian foreign Klobuchar but we don't know for sure until tonight and tonight could change our Pryor's drastically or could not so keep an honest count it's thanks a lot or.

This transcript has been automatically generated and may not be 100% accurate.

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