Brooke Green

Brooke Green: Idaho Democratic Incumbent for House District 18B

Brooke Green is a Democratic member of the Idaho House of Representatives representing District 18B, which covers south Boise in Ada County. Green lives in Boise and is running unopposed in the May 19, 2026, Democratic primary, per Ballotpedia. No Republican challenger had filed for the general election as of April 2026. She is seeking her fifth term.

Background

Green was raised in Los Alamos, New Mexico, and has lived in Boise for many years, per Ballotpedia. She earned degrees in communication and marketing technology from Boise State University and a Master of Business Administration from Northwest Nazarene University, per her Idaho Legislature biography. She works as a Senior Transportation Planner at the Ada County Highway District, where she has coordinated public transportation across a ten-county region, per Ballotpedia. Green has received recognition including the Idaho Business Review's Woman of the Year honor. She has served as chair of the City of Boise Open Space and Clean Water advisory committee and as a board member of the Land Trust of Treasure Valley, per Ballotpedia. She also serves on the Idaho Behavioral Health Council and the Governor's Cybersecurity Task Force. Her family includes a son, per KTVB.

Political Career

Green was first elected to the Idaho House of Representatives in November 2018, defeating Republican Steve Simmons, and has held the seat continuously since, per Ballotpedia. She ran unopposed in both the 2024 primary and general election. Her most significant piece of legislation to date is House Bill 134, which she co-sponsored with Republican Rep. Dori Healey and Minority Leader Ilana Rubel in the 2025 session. HB 134 requires health insurance companies to cover supplemental breast cancer screening, including MRIs, ultrasounds, or contrast mammograms, for patients at increased risk, with no patient cost-sharing. Governor Brad Little signed the bill on March 24, 2025, effective January 1, 2026, as reported by KTVB. Green described it as the most meaningful legislation she had carried in her four terms. The bill emerged directly from Green's own breast cancer diagnosis in the summer of 2024. During committee testimony, she stated her own mastectomy cost $137,000, compared to a few hundred dollars for the supplemental MRI screening that might have detected the cancer earlier, as reported by Boise State Public Radio. She told committee members: "One in three female Idahoans age 50 to 74 are not up to date on their breast cancer screening. Idaho ranks 50th among states for breast cancer screening." She had her sister substitute for her in the legislature during part of the 2025 session due to treatment, per Idaho Reports. Eight Republican male colleagues, including Reps. John Shirts, Jaron Crane, Jeff Cornilles, Josh Wheeler, Dan Garner, and others, shaved their heads in solidarity with Green during the 2025 session, per Wikipedia and the Idaho Capital Sun.

Policy Positions

Green's documented legislative priorities reflect her professional background in transportation planning and her personal experience with breast cancer diagnosis and treatment. On transportation and infrastructure, her career at ACHD informs her committee work on transportation policy and her focus on connected, accessible communities. She has worked on bike and pedestrian planning alongside motor vehicle transportation. On healthcare, her sponsorship of HB 134 reflects a commitment to closing gaps in insurance coverage that disproportionately affect women in rural and underserved communities. At the bill signing she said: "Our ladies in Idaho will have an opportunity to get early detection, and because of that, we're going to keep families together longer. I do this for my son because I want to be here longer for him," per KTVB. On open space and clean water, her leadership of Boise's Open Space and Clean Water advisory committee and her board service with the Land Trust of Treasure Valley reflect sustained environmental conservation priorities.

Political Alignment

Green is a Liberal Democrat whose legislative record reflects a practical, constituent-centered approach to healthcare, transportation, and environmental policy. Her bipartisan HB 134, co-sponsored with a Republican colleague and signed by a Republican governor, demonstrates her ability to advance Democratic priorities through cross-aisle collaboration. She represents a solidly Democratic south Boise district and has run without Republican opposition in recent cycles.

Campaign and Endorsements

Green is running unopposed in the May 19, 2026, Democratic primary, per Ballotpedia. She is listed in the Ada County Democrats' 2026 voter guide. Ballotpedia did not identify endorsements for her 2024 campaign. Campaign finance records are available through the Idaho Secretary of State's Sunshine database.