In 2014 Arroyo defeated incumbent Edwin Reyes to become a Cook County commissioner.[1]
In 2015, Arroyo was a key vote to raise the Cook County sales tax.[2] Arroyo is the son of former Illinois State Representative Luis Arroyo.
In 2021, Arroyo's taxes were subpoenaed by Federal prosecutors as part of a broader corruption probe investigating connections between lobbyists and Illinois politicians.[3]
In 2022, Arroyo lost his Democratic primary for reelection to challenger Anthony Quezada.[4]