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 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 Democrat from Hancock County, joins a growing list of mostly little-known candidates to challenge Collins, who is seeking a 6th term.