We're not going to have five different candidates winning four or more states. That never happens. At most, three candidates will win multiple states. People always say that it'll be a messy 4- or 5-way split, but the media attention always coalesces on a handful of leading candidates, and the 5th place and below candidates aren't able to get any media oxygen. Many pundits predicted a similar mess in the crowded 2008, 2012, and 2016 GOP races, but in all three cases there were no more than three candidates who were able to win more than one state.