Democrat Troy Jackson defeats Susan Collins to win Maine Senate seat

Source Summary

Democrat Troy Jackson, 58, defeated five-term Republican incumbent Susan Collins in Maine's 2026 midterm Senate race. The closely contested election was marked by mutual accusations of corruption and disputes over living costs in the predominantly rural state. Jackson's victory represents one of the major upsets of the 2026 midterms.

Why it matters

The defeat of a five-term incumbent senator represents a significant shift in a traditionally competitive Senate seat and alters the partisan balance in the chamber.