Kristina Shelton holds a bachelor's degree in kinesiology and a master's in science and health promotion management. She spent several years in education, teaching health and physical education at a community college and directing programs for a non-profit organization. Shelton transitioned to the public sector, where she gained significant experience on a school board, rising to the position of vice president. Her career achievements include winning a primary election and a general election, and she later took on a leadership role in progressive advocacy.

Kristina Shelton combines a progressive advocacy for health and education with an ideologically agile approach to policy, as seen in her support for increased public school funding alongside unexpected alliances on environmental regulations. Her background in health and physical education informs her policy stances, which often emphasize community wellness. Shelton's personal commitment to progressive values is evident in her work with Wisconsin Progress, yet her legislative record hints at strategic calculations that balance these commitments with regional industrial interests.