谷垣祯一发誓领导自民党在明年夏天的上议院选举中取得胜利，但是这看起来不大可能。
Mr Tanigaki vows to lead the party to victory in upper-house elections next summer, but that looks unlikely.
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。
Probable contenders are Taro Aso, the foreign minister, and Sadakazu Tanigaki, a former finance minister, both leaders of small factions.
如果是后者发生，外交大臣麻生太郎可能是最合适的首相继任者，前财务大臣谷垣祯一也可能参与角逐。
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.
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