State Senator - District No. 22
July 21, 2026 · State Senate District 22; Arizona · State senate district · primary
How do we calculate vote impact?
Vote impact = representation (how much weight one vote carries here, the smaller the district's population, the higher the representation) + decisiveness (how likely this race is to be close, based on past results and number of candidates).
Representation: Low · 30 out of 100
This district is large for its type, so each vote is a smaller slice of the outcome. About 257,571 people live here.
score = 100 × ln(largest population ÷ this district's) ÷ ln(largest ÷ smallest), rounded to 2 decimals = 100 × ln(275,769 ÷ 257,571) ÷ ln(275,769 ÷ 221,081) = 30.89, comparing state senate districts in AZ (grades: 66+ high, 33+ average, otherwise low)
Decisiveness: None · only 1 candidate
One candidate is running unopposed, so votes can't change the outcome.
Low representation + an uncontested race → Very low vote impact.
State Senator is responsible for:
- Voting on state laws and the state budget
- Representing their district in the state senate
- Confirming certain governor appointments in many states
- Helping district residents deal with state agencies
Affected Areas: Environment and Public Health, Reduce Wealth Gap, Anti-Corruption, Government Efficiency, Healthcare Affordability, Government Spending Reduction, Public Safety and Crime Control, Housing Affordability, Social Programs and Welfare, Public Education Quality, Gun Control, Women's Reproductive Rights, Election Integrity, Personal Income Tax Reduction, Data Privacy, Civil Rights, Corporate Accountability, Public Infrastructure
Candidates
Eva Diaz
Democrat · Incumbent · declared
Eva Diaz is an Arizona state senator, educator, school administrator, college instructor, and preschool co-owner from Tolleson. Before entering the Senate in 2023, she taught in three elementary-school districts, served as an assistant principal and principal, taught at South Mountain Community College and Arizona State University, and chaired the Tolleson Planning Commission. She holds a doctorate in curriculum, instruction, and educational leadership from Arizona State University.
Records: Civil Rights 3 for, Corporate Accountability 1 for, Data Privacy 1 for, 1 against, Government Efficiency 1 for, Government Spending Reduction 1 for, Personal Income Tax Reduction 1 against, Public Education Quality 1 for, Public Safety and Crime Control 3 for, Reduce Wealth Gap 1 for
Election sources
Source: azsos.gov
Source: azsos.gov