Much of what Canadians know about their political leaders, party politics, and public policy comes through the media, particularly television, radio, and newspapers, which serve as the major information conduit between the general public and the political realm. Even before modern technology made it possible to broadcast news on a national scale, people had been listening to politicians' speeches over the radio. In fact, the first presidential address was given by Franklin D. Roosevelt over WJZ in New York City on April 5, 1933. Since then, every president has delivered at least one speech per year, usually during the State of the Union address but also including other occasions such as the inauguration or the annual AFL-CIO's Martin Luther King Day celebration. Television has become an even more important source of information for voters. Not only do many people follow world events through the news reports that technology makes available, but they also use television to learn how their elected officials are doing. Each week, members of Congress are given an opportunity to speak on the floor of the House or Senate about issues before them. These weekly addresses are often quoted by journalists as well as ordinary citizens who may have different views on how those issues should be dealt with. Newspapers are another important source of information for voters. Although less popular than television or radio, they too can have a profound impact on voter behavior.