As of November 2009, Kidder was the Montana State Coordinator for Progressive Democrats of America. The organization's website carried her article "Ax Max", in which she criticized Max Baucus, Montana's Democratic senator. She also contributed articles to "CounterPunch", a left-wing magazine, beginning in 2009. On August 22, 2015, she was named the host of a dinner event by the Yellowstone County Democrats in Billings, Montana called "Billings for Bernie" in support of Bernie Sanders' presidential primary bid. In a "CounterPunch" article expressing her reaction to the 2016 Democratic National Convention, she wrote, "I am not an American tonight... I reject the words I voiced at my citizenship ceremony."