The influence industry is not tied to one party, politician or even country. It is a global - and ever-expanding - network of data brokers, communication consultants and campaign technologists who advise political parties and carry out communications in the political sphere. This module aims to introduce key concepts that are core to understanding this industry, including: key features that identify the international scope of the influence industry; the history of political communications and the role of mediating third parties from press to PR; and defining personal data and its transformation into political data for influence campaigns.