Arnold Williams attended Fillmore public school and Henagers Business College in Salt Lake City. He served in the U.S. Army during World War I and later established a successful dry cleaning business in Rexburg, Idaho. Williams transitioned into public service, being elected to the Idaho House in 1936 and later serving as lieutenant governor and governor. He was also appointed to the U.S. Senate and elected secretary of state of Idaho.

Arnold Williams's political career reveals a unique blend of ideological agility and regional pragmatism, particularly evident in his unexpected alliances on environmental regulations. His military background and business acumen suggest a strategic approach to governance, balancing progressive ideals with conservative pragmatism. Williams's tenure as the first Mormon governor of Idaho adds a distinctive cultural dimension to his political identity, hinting at a nuanced understanding of minority representation in governance. His ability to navigate between Democratic and Republican factions indicates a calculated, rather than rigid, ideological stance.