Tokyo gains stronger position on defense expansion after Okinawa gubernatorial victory
A candidate supported by Japan's central government secured victory in Okinawa's gubernatorial election on Sunday, defeating an incumbent who opposed Tokyo's military expansion plans across the strategically important island chain near Taiwan and China.
Genta Koja, 42, won 59% of the vote against two-term governor Denny Tamaki, 66, in results announced early Monday. The outcome, driven largely by voter concerns over rising living costs, ends 12 years of governance by leaders who frequently clashed with the central government over military policy. Koja will become the youngest Okinawa governor since the prefecture was returned to Japan from U.S. rule in 1972, and the first governor born after the 1972 reversion.
The victory represents a significant shift for Okinawa, which hosts approximately 70% of U.S. military facilities in Japan despite occupying only 0.6% of the nation's total landmass. About 30,000 U.S. military personnel are currently stationed across the prefecture.
Base relocation plan gains momentum
Tamaki's defeat could weaken local resistance to the relocation of U.S. Marines from the busy Futenma air base to a more remote facility at Henoko, on Okinawa's main island. Opponents have long demanded that the troops be moved out of the prefecture entirely rather than relocated within it.
The relocation plan, originally agreed in 1996, has been delayed by more than 20 years. Cost estimates have ballooned from $3.2 billion to $8.5 billion, with completion now pushed into the 2030s due to soft seabed conditions requiring extensive ground reinforcement. Japan's government confirmed Monday it would continue pressing ahead with the transfer.
Tamaki, the son of a U.S. Marine father and an Okinawan mother, first won election as governor in 2018 and was seeking a third term. He made history as the first person with an American parent to lead Okinawa.
Expanded military access expected
Koja's victory may also facilitate expanded military access to civilian airports and ports, according to Masaaki Gabe, professor emeritus at the University of the Ryukyus.
Koja could reasonably be expected to approve their designation, opening wholly civilian facilities to military use.
The election outcome aligns with broader political momentum following the Liberal Democratic Party's historic two-thirds supermajority in Japan's February 2026 snap general election, when the party swept all four of Okinawa's electoral districts.
Defense buildup accelerates
The election result comes as Prime Minister Sanae Takaichi, Japan's first female prime minister who took office in October 2025, prepares to unveil a new national security strategy this year. The strategy is expected to accelerate Japan's biggest military buildup since World War Two, with officials citing the need to deter China from using military force to advance its territorial ambitions in East Asia.
Japan approved a record defense budget of approximately $58 billion for fiscal year 2026, representing a 3.8% increase and marking the 12th consecutive year of defense spending increases. Takaichi has accelerated the previous administration's timeline, bringing forward the goal of reaching 2% of GDP in defense spending to March 2026, two years earlier than originally planned.
Okinawa forms part of what military planners call the First Island Chain, a string of territory stretching from Japan through the Philippines that constrains China's access to the Western Pacific. Yonaguni, Japan's westernmost inhabited island, lies just 110 kilometers east of Taiwan, which Beijing claims as its own territory.
Tensions between Tokyo and Beijing have escalated since Takaichi stated last year that a Chinese attack on Taiwan that also threatened Japan could trigger a military response. Japan has deployed missile and electronic-warfare units on several southwestern islands and is expanding ammunition storage across the territory.
The history of U.S. military presence on Okinawa remains contentious. The prefecture was under U.S. military occupation for 27 years after World War II, from 1945 until its reversion to Japanese control in 1972, during which time the U.S. dollar was the official currency and Okinawans needed passports to travel to mainland Japan.
