“A quiet but significant shift across a handful of states could reshape the Democratic nominating process ahead of 2020: The party is now poised to see a historic reduction in the number of states that use caucuses over primaries to pick a presidential nominee,” BuzzFeed News reports. “By next year, Democrats could see the number of caucus states cut in half.” “Four states have already moved from a caucus system to a traditional primary: Maine, Minnesota, Colorado, and, as of last month, Idaho made the switch.