Notes of a word-watcher, Hanching Chung. A first port of call for English learning.
share a platform
（the platform） （壇上の）演説者; share a platform 1to give speeches or to perform at the same public event: It was the first time a Green politician and a Labour minister had shared a platform .
2[C]UKthe people who are up on a platform in order to speak to an audience: An elderly lady stood up and said she had a question for the platform. The platform party(= the group on the platform) applauded loudly.