All the president's men: China's politburo line-up a measure of Xi's power

(Repeating story previously sent on September 4)

By Benjamin Kang Lim and Philip Wen

BEIJING, Sept 4 (Reuters) - President Xi Jinping of China is expected to place trusted allies in the Communist Party's key decision-making Politburo during a leadership reshuffle at the 19th party Congress this autumn, according to multiple Chinese sources and foreign diplomats.

A key measure of Xi's power will be how many of his allies are installed on the 25-member committee.

At least 10 Politburo members are slated to retire due to an unwritten rule that politicians step down if they are 68 or older when they take on a new five-year term.

And the youngest Politburo member, Sun Zhengcai, 53, is out of the running. He served as Chongqing party boss before being put under investigation in July for disciplinary violations, Communist Party jargon for corruption.

The fate of the top corruption watchdog, Wang Qishan, 69, is also the subject of widespread conjecture. It is unclear if he will retain his seat in the elite seven-member Politburo Standing Committee, despite his age, and therefore his spot on the wider Politburo.

The State Council Information Office, which doubles as the spokesman's office for the cabinet and party, declined to comment on Politburo candidates when reached by telephone and fax. Possible newcomers to the Politburo among Xi's allies (surnames in alphabetical order):

* Cai Qi, 61, has enjoyed a meteoric rise under Xi and is considered a shoo-in after he was named party boss of Beijing in May, despite not being a full or alternate member of the wider Central Committee. Since 1987, whoever holds the office of Beijing party chief has also been a Politburo member. Cai overlapped with Xi during the future president's 17-year stint in the southeastern province of Fujian, and in the eastern coastal province of Zhejiang, where Xi was party boss from 2002 to 2007. Cai is a native of Fujian.

* Chen Miner, 56, was seen to have performed strongly as the leader of Guizhou province before being named party boss of the southwestern metropolis of Chongqing on July 15, replacing Sun. Chen, a native of Zhejiang, is also virtually assured of a seat in the Politburo given his position in Chongqing, the sources said. Chen is a dark horse candidate to catapult straight onto the Standing Committee.

* Chen Quanguo, 61, was promoted to party chief of the restive far-western region of Xinjiang, bringing along with him the tough ethnic management policies he implemented at his previous post in Tibet. Chen has never worked closely with Xi.

* Chen Xi, 64 this month, a native of Fujian, is tipped to be promoted to minister of the party's organisation department, overseeing the promotion and deployment of party officials. He is currently vice-minister at the department. Chen shared a dormitory with Xi when the two attended the prestigious Tsinghua University in the late 1970s.