From nearly the moment the woman's suffrage movement began at Seneca Falls in 1848, anti-suffragists actively campaigned against it, claiming that woman suffrage would only destroy both American politics and the American family. However, despite their best efforts, states in the American West passed equal suffrage laws. Interestingly, once it passed in their states, anti-suffragists in the American West—albeit begrudgingly—exercised their right to vote. As equal suffrage continued to expand, the Western anti-suffragist strategy became the strategy of anti-suffragists everywhere. This essay examines three states that represent pivotal moments in the development of the anti-suffrage movement: Colorado, California, and Oklahoma. Shortly after Colorado passed equal suffrage in 1893 and California passed equal suffrage in 1911, anti-suffragists organized state and national associations. By the time Oklahoma passed its equal suffrage law in 1918, anti-suffragists were not only voting—they were also willing to run for office. Anti-suffragist strategy and rhetoric relied on how suffrage worked in the West, or at least anti-suffrage perceptions of it. In other words, women's suffrage in the West served as a catalyst for the anti-suffragist movement.