Nancy Keenan holds an undergraduate degree in education from Montana State University and a master's degree from the University of Montana. She began her career as a special-education teacher and was elected to the Montana House of Representatives. Keenan served three terms as the Superintendent of Montana Office of Public Instruction, focusing on education policy. She later transitioned to the public sector, working as the Education Policy Director for People For the American Way (PFAW) and advocating for access to abortion as President of NARAL Pro-Choice America. Keenan was recognized as one of the 100 most powerful women in Washington, DC by Washingtonian Magazine in 2006.

Nancy Keenan's political identity is shaped by her deep commitment to education and reproductive rights. Her career trajectory from a special-education teacher to leading NARAL Pro-Choice America reveals a dedication to advocating for marginalized communities. Keenan's approach to abortion rights is notably nuanced, emphasizing prevention alongside access, which sets her apart from more binary stances. Her leadership roles in both education and reproductive rights suggest a strategic effort to intertwine social justice issues, creating a unique ideological blend that challenges conventional policy categorizations.