State Senator - District No. 20
July 21, 2026 · State Senate District 20; 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: Average · 60 out of 100
This district is mid-sized for its type, so each vote carries average weight. About 241,065 people live here.
score = 100 × ln(largest population ÷ this district's) ÷ ln(largest ÷ smallest), rounded to 2 decimals = 100 × ln(275,769 ÷ 241,065) ÷ ln(275,769 ÷ 221,081) = 60.85, comparing state senate districts in AZ (grades: 66+ high, 33+ average, otherwise low)
Decisiveness: Unknown
No past results for this contest yet.
Average representation + unknown decisiveness → Average vote impact.
Some data is missing, so this rating is based on partial information and capped at "High".
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
Alma Hernandez
Democratic · declared
Alma Hernandez is a Democratic Arizona state representative for Legislative District 20 and a 2026 candidate for the district's open state Senate seat. A Tucson public-health professional, she has worked on health-care access, HIV/AIDS services, higher-education advocacy, and Democratic campaigns and has served in the Arizona House since 2019.
Records: Civil Rights 2 for, Election Integrity 2 for, Government Spending Reduction 1 for, 4 against, Housing Affordability 1 for, Public Education Quality 2 for, 1 against, Public Infrastructure 1 for, Social Programs and Welfare 1 for
Rocque Perez
Democratic · declared
Rocque Perez is a fourth-generation Tucsonan, education advocate, and former Tucson City Council member running for Arizona State Senate District 20. He has worked at the University of Arizona and Arizona State University, led regional postsecondary-access work, and in 2025 was unanimously appointed to a temporary City Council vacancy, where he directed community investments and supported housing, education, and public-health initiatives.
Records: Civil Rights 1 for, Corporate Accountability 2 for, Environment and Public Health 1 for, Government Spending Reduction 3 against, Public Education Quality 1 for, Public Infrastructure 2 for, Reduce Wealth Gap 2 for, Social Programs and Welfare 1 for
Election sources
Source: azsos.gov
Source: azsos.gov