This article examines the relationship between lobbying organizations, the Prime Minister’s Office (PMO), and other central agencies of the Canadian government. First, an overall examination of the Canadian lobbying registry shows that the PMO is one of the most lobbied institutions of the executive branch. Second, a statistical model evaluates the effect of organizational (such as the interest type and policy sector) and other strategic factors on the volume of communication between lobbying organizations and the PMO. This inquiry concludes that strategic choices related to the amount of lobbying activities and the scope of lobbying campaigns have the most consistent impact on the access to top‐level policymakers. In the end, the results support the claim that lobbying should be understood as a social, self‐reinforcing process unfolding over the medium‐ and long‐term.