On October 25, 1912, Montana citizens approved a landmark corrupt practices act, a pivotal moment in the state's efforts to curb the undue influence of money in politics. This legislation was a direct response to the era of the 'copper kings,' particularly the notorious actions of William A. Clark, who had controversially secured a U.S.

Senate seat through bribery in 1899. The act specifically barred all corporate spending in state elections, aiming to ensure fairness and transparency in the democratic process.

This early 20th-century reform reflected a strong public desire to prevent wealthy industrial interests from dominating political outcomes, a sentiment deeply rooted in Montana's history of resource extraction and corporate power struggles. Although parts of this original act were later challenged and overturned by federal courts, its initial approval marked a significant step in Montana's ongoing commitment to campaign finance reform and remains a testament to the state's pioneering spirit in addressing political corruption.