Last updated: Sep 27, 2024 Montana Data Visualizations Voter Registration Last updated September 26, 2024 The number of registered voters in Montana from mid-August to today, split into Active, Inactive, and Provisional. The number of active voters has risen from just over 600,000 to about 630,000. The number inactive has shrunk from just over 150,000 to just over 140,000. The number of provisional voters has hovered around 1,000, indistinguishable from zero on the plot.