AP will base its race call on state delegate equivalents because delegates are the metric used to decide the eventual winner of the Democratic presidential nomination.
The Iowa Democratic Party will also provide two additional results for the first time this year: how much support candidates had from voters at the beginning of the caucuses and how much support they had at the end, after voters backing low-performing candidates are allowed to switch their support. The latter total is then used to determine state delegate equivalents.
AP will report all three results and provide all three numbers to its election subscribers.
AP Election Decision Editor Stephen Ohlemacher explains the decision to base AP’s race call on state delegate equivalents in the Ground Game podcast: http://apne.ws/87QWse4