This document provides an overview of the functions and history of media in American politics. It discusses how the media gathers and disseminates information to the public through various sources like newspapers, radio, television, and the internet. While the main goal of informing the public has remained the same, the ways information is delivered has changed over time. The document also examines the development of media from the labor-intensive printing presses to today's digital landscape and analyzes the media's role in politics as gatekeepers, disseminators, investigators, and public mobilizers.