Who takes over if Japan’s Prime Minister Shinzo Abe decides to go?

“There is little choice but to continue with aggressive fiscal policy and monetary easing giving the state of the economy, especially after the pandemic,” said Hiroshi Miyazaki, senior economist at Mitsubishi UFJ Morgan Stanley Securities. “If a new leader wants to upend economic policies, that would cause yen gains and stock falls. No one wants that.”

Abe is planning to hold a news conference Friday, where he would discuss his health, Kyodo News reported. It would be his first extended public speaking appearance since June.

Abe hasn’t said he’ll step down, but a chronic ailment forced him to abandon an earlier stint as premier in 2007. Here are some of his most likely successors:

Shigeru Ishiba, 63, former defense minister

Shigeru Ishiba speak ahead of Ruling Liberal Democratic Party’s Leadership Vote. (File)

No national election need be held until 2021, so a new LDP leader would succeed Abe as premier. Polls show Ishiba is the voters’ top choice to take over. He has backed economic policies seen as more populist than Abe’s and said in an interview in April that too much wealth was accumulating in the hands of stockholders and company owners. He has also cast doubt on the sustainability of the Bank of Japan’s monetary policy.

On the international front, Ishiba has been aligned with Abe in trying to keep ties with China on a steady path. Ishiba last month urged an LDP group to think about the consequences of its call for the cancellation of a planned state visit to Tokyo by President Xi Jinping. Ishiba, however, has been far more hesitant than Abe about attempting to change the country’s pacifist constitution.

Taro Kono, 57, defense minister

Taro Kono

Current Defense Minister Kono is a fluent English speaker and graduate of Georgetown University. He expressed interest in an interview with the Nikkei newspaper earlier this month in working closely with the so-called Five Eyes intelligence alliance, which brings together Australia, Canada, New Zealand, the U.K. and the U.S. That could suggest he is willing to step up joint pressure on China.

In 2017, Kono urged the Bank of Japan to lay out a strategy for exiting its ultra-easy monetary policy. He is also known for favoring cost-cutting policies and this year canceled plans to deploy the Aegis Ashore ballistic missile defense shield from U.S. firm Lockheed Martin Corp., citing the cost of adapting it to meet Japan’s safety requirements. The move was popular with voters.

Fumio Kishida, 63, former foreign minister

Abe has touted Kishida as a potential leader, appointing him as foreign minister and then to a senior party post. But the mild-mannered former banker has so far failed to build a public profile.

Seen as more dovish than Abe, Kishida sealed an ill-fated deal with South Korea in 2015 that was meant to end a dispute over women trafficked in brothels run by Japan’s military during World War II. But that accord eventually ended in rancor.

In an interview with broadcaster TV Tokyo on Monday, Kishida said he expected interest rates to remain low, given the state of the economy. He called for plentiful spending to combat the economic crisis, but urged caution on the idea of cutting the sales tax. Kishida also mentioned the need to return to fiscal discipline later.

Yoshihide Suga, 71, chief cabinet secretary

Yoshihide Suga

Having served as chief cabinet secretary — or Abe’s right-hand man — since 2012, Suga is a continuity candidate, who could be tapped as a caretaker if the premier steps down suddenly. In 2007, Abe resigned from an abbreviated first term in office, saying a worsening of chronic ulcerative colitis made it impossible to carry out his duties.

Although Suga hasn’t laid out an alternative policy platform, he has pushed particular issues, including controversial government subsidies for domestic travel during the virus pandemic.

Taro Aso, 79, finance minister

Taro Aso

Aso, like Suga, is part of Abe’s inner circle and is Japan’s long-serving finance minister and deputy prime minister. Given his age, he’s unlikely to serve as premier for more than a caretaker period. He served an unsuccessful year in the post in 2008-2009, at the end of which the Democratic Party scored a landslide election victory over the LDP.