A largely unknown oysterman and military veteran, Graham Platner garnered widespread attention this week when he launched a U.S. Senate campaign to try to unseat long-time Republican U.S. Sen. Susan Collins.

Graham Platner, a military vet and oysterman from a small town in Maine, will run for U.S. Senate as a Democrat in an effort to oust Republican Susan Collins.

A U.S. military veteran and oyster farmer on Tuesday launched a bid to unseat Republican U.S. Senator Susan Collins in Maine, as his party fights an uphill battle to try to recapture control of the chamber in next year's midterm elections.