Sanae Takaichi, set to take office as Japan’s next prime minister , appointed former premier and influential party figure Taro Aso as vice president of her ruling party on Tuesday, a decision seen by some analysts as a check on large-scale fiscal spending.

Takaichi also chose former finance minister Shunichi Suzuki as secretary-general of the Liberal Democratic Party (LDP) , a job that wields huge influence in party affairs, in a line-up of key party posts announced on Tuesday.

The announcements came after the ruling party’s pick of fiscal dove Takaichi as its head on Saturday, putting her on course to become Japan’s first female prime minister.

Japan’s share prices surged and the yen slumped this week on market expectations Takaichi will deploy big fiscal stimulus and pressure the

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