US Senate Candidates 2026 David Costello www.costelloforsenate.com David Evans davidevansforsenate.com Janet Mills janetmills.com/ WBUR: Maine Gov. Janet Mills enters crowded Democratic race to unseat Susan Collins Graham Platner www.grahamforsenate.com mainepublic.org: Who Is Graham Platner and Why Is He Everywhere Right Now? Other candidates running in the general election for U.S. Senate Maine on November 3, 2026: Natasha Alcala Andrea LaFlamme