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China's political elite is clearly divided against itself, although the precise composition of the factions is much hazier. Some observers see a contest between a group of “princelings,” the descendants of China’s revolutionary founders, and those from more modest backgrounds, many of whom got their start in the Communist Party Youth League. (Xi belongs to the first group, Li is a member of the second.) Others describe a behind-the-scenes struggle between Hu, Wen and their followers, and the protégées of retired but still influential president Jiang Zemin. Very public accusations of corruption against the former Chongqing mayor and high-profile princeling Bo Xilai earlier this year removed him from contention for a spot on the Standing Committee; there...