The Montana Plan

Prominent Democrat Pete Buttigieg will stump for a Montana ballot initiative in Butte next month. The proposal aims to rein in corporate campaign spending. Buttigieg, a former presidential candidate, will hold a town hall in support of the "Montana Plan" on May 17. He says it could become a blueprint for other states.

Several Montana industry groups and chambers of commerce are suing the state over a ballot initiative aimed at restricting 'dark money' in campaign spending.