U.S. Senator Marsha Blackburn dominates trader consensus at 89.5% implied probability to win Tennessee's Republican gubernatorial primary on August 6, driven by a late-March 2026 Cygnal poll showing her 58% support amid a crowded field of over two dozen candidates, reflecting her high name recognition, fundraising strength, and alignment with conservative priorities like limited government. Congressman John Rose holds second at 4.5% following his early campaign launch and regional visits, while state Representative Monty Fritts trails at 4.6% after his anti-establishment bid. With early voting approaching, no new polls have emerged to shift the crowded primary dynamics, underscoring Blackburn's frontrunner status in this open-seat race succeeding term-limited Governor Bill Lee.