Community organizers (OC) implement a liaison function that has changed according to the various periods of development of the community and territory approach from Local Community Service Centres (CLSC) to Health and Social Services Centres (CSSS). In a context of growing importance of intersectoral approaches and increasing number of development jobs related to community organizing, the function has diversified. Functions, including liaison, are a blind spot in Quebec’s and North America’s literature about community organizing. The research showed the importance of political context in liaison function practices that are based on five skills: knowing the community, mobilizing stakeholders, ensuring the cohesion of the local action system, democratizing relations with authorities, and making resources accessible for the implementation of actions.