![VPR News show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/045/750/small/vpr-news-from-vermont-public-radio.jpg)
Summary: Many of the Democratic presidential candidates are spending a lot of time in the early primary states — Iowa, New Hampshire, Nevada, South Carolina — but the awarding of delegates in the primary and caucus states could be significantly affected by what's known as "the 15% rule."