Probable contenders are Taro Aso, the foreign minister, and Sadakazu Tanigaki, a former finance minister, both leaders of small factions.
最可能的竞争者是前外交大臣麻生太郎和前财政大臣谷垣祯一，两者都是各自的小派系的领导者。
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In this scenario, Taro Aso, the foreign minister, is perhaps the favourite to succeed, with Sadakazu Tanigaki, a former finance minister, also a likely contender.