Reilly Neill’s position as the clear frontrunner in Montana’s Democratic U.S. Senate primary stems from her status as the only candidate with substantial personal fundraising and prior legislative experience as a former state representative. Her campaign has raised far more than rivals through the most recent reporting periods, enabling broader outreach in a low-profile race. Alani Bankhead, a military veteran, has received notable outside support from independent expenditure groups that have spent hundreds of thousands on ads attacking Neill and promoting Bankhead, particularly on rural and immigration issues. The remaining candidates trail with minimal reported fundraising and visibility. The June 2 primary occurs amid an open Republican seat and a competitive general-election landscape featuring an independent candidate.