Sandra was first elected to the Arizona Corporation Commission in 2008 on a platform of promoting solar energy in Arizona and as a fierce consumer advocate. In her first term at the Corporation Commission, she worked with the Republican majority to advance Solar Energy and Energy Efficiency. She is the first and only African American in Arizona to hold statewide office and the first black woman to hold statewide elected office west of the Mississippi.
Sandra was re-elected to the Corporation Commission in 2018 on a platform of restoring integrity and transparency to the Commission, lowering unjustified utility rate increases and creating more solar and renewable energy options in Arizona, especially roof top solar.