Graham Platner is projected to win the Democratic nomination for the U.S. Senate race in Maine, ABC News projects. The oyster farmer and military veteran will now face off against incumbent Republican Senator Susan Collins in the November general election.

This race is anticipated to be one of the most closely watched contests of the midterm elections, as Democrats aim to gain control of the Senate. Platner's victory in the primary marks a significant step in his campaign to unseat the longtime Republican senator.

Platner's primary campaign, which focused in part on addressing wealth inequality, garnered early endorsements from progressive figures like Vermont Senator Bernie Sanders and Massachusetts Senator Elizabeth Warren. After Maine Governor Janet Mills withdrew from the race in late April due to financial constraints, and former Maryland state official David Costello remained largely unknown according to a late May poll, prominent Democratic leaders, including Senate Majority Leader Chuck Schumer, publicly backed Platner.

The implications of Platner's nomination extend to the broader national political landscape. His candidacy could influence the balance of power in the Senate, making the Maine race a key battleground for both parties.

Platner navigated several controversies during his primary campaign. These included past allegations of having a tattoo that resembled a Nazi symbol and accusations published by The New York Times and The Wall Street Journal regarding sexually explicit text messages. Platner has addressed these issues, acknowledging a "very dark period" in his life and stating that elements of his past were being "litigated and weaponized."

Governor Mills, a notable figure in Maine politics, had suspended her campaign citing insufficient funds. David Costello, the other Democratic contender, did not gain significant traction in polling, leaving Platner as the clear frontrunner once Mills exited the race.

Senator Collins, a Republican, has served in the Senate since 1997. Her general election matchup against Platner is expected to draw considerable national attention and campaign resources from both parties.

The outcome of this election will be closely monitored as an indicator of voter sentiment and the potential for party shifts in the Senate.