Troy Jackson, 58, has emerged as the front-runner for the Maine Democratic U.S. Senate nomination after securing nearly two-thirds of 601 state delegates following county conventions. Shenna Bellows and Nirav Shah withdrew their campaigns, with Bellows citing the need to unite against Susan Collins. Jackson's record includes leading a 1998 loggers' blockade and speaking at a July 14 demonstration in Scarborough, Maine, the same day a man was fatally shot by ICE agents there.