Eva Diaz has dedicated 27 years to the education sector, holding various roles from teacher to principal, and has contributed to higher education as an instructor. She holds a PhD in Curriculum and Instruction and Educational Leadership. Diaz has also served as Chair of the Tolleson Planning Commission since 2013. Currently, she co-owns a preschool and is a member of the Arizona State Senate, representing District 22.

Eva Diaz's political identity is marked by a unique blend of educational advocacy and progressive environmentalism, tempered by a pragmatic approach to local governance. Her long-standing commitment to improving Arizona's educational system, stemming from her career in teaching and administration, juxtaposes with her fierce defense of women’s rights, particularly reproductive healthcare. Diaz's legislative record reveals an unexpected convergence with opposing factions on environmental regulations, indicating a highly calculated approach to protecting regional industrial interests. This strategic tension between progressive ideals and localized policy-making makes Diaz an intriguing figure in Arizona politics.