	Introduction

Beginning with the widespread use of e-mail by Congress in the mid-1990's, the development and adoption of new electronic technologies has altered the traditional patterns of communication between Members of Congress and constituents. Many Members now use e-mail, official websites, blogs, YouTube channels, and Facebook pages to communicate with their constituents—technologies that were either non-existent or not widely available 15 years ago. These technologies have arguably served to enhance the ability of Members of Congress to fulfill their representational duties by providing greater opportunities for communication between the Member and individual constituents, supporting the fundamental democratic role of spreading information about public policy and government operations. Electronic communications, however, have raised some concerns. Existing law and chamber regulations on the use of communication media such as the United States Postal Service have proven difficult to adapt to the new electronic technologies. This report examines Member use of one specific new electronic communication medium: Twitter. After providing an overview and background of Twitter, the report analyzes patterns of Member use of Twitter during August and September 2009. This report is inherently a snapshot in time of a dynamic process. Thus, the conclusions drawn from this data can not be easily generalized nor can these results be used to predict future behavior. In addition, electronic technology has reduced the marginal cost of constituent communications; unlike postal letters, Members can reach large numbers of constituents for a relatively small fixed cost. As with any new technology, the number of Members using Twitter and the patterns of use may change rapidly in short periods of time. Member Registration with Twitter

As of September 30, 2009, a total of 205 Members of Congress were registered with Twitter, 39 Senators and 166 Representatives. Members sent a total of 7,078 tweets during August and September 2009, for an average of approximately 116 Member tweets per day. To assess the content of Member tweets, eight major message categories were hypothesized: position taking, policy statements, media or public relations, district or state, official or congressional action, personal, campaign, and other.
Beginning with the widespread use of e-mail by Congress in the mid-1990's, the development of new electronic technologies has altered the traditional patterns of communication between Members of Congress and constituents. Many Members now use e-mail, official websites, blogs, YouTube channels, and Facebook pages to communicate with their constituents—technologies that were either non-existent or not widely available 15 years ago.
These technologies have arguably served to enhance the ability of Members of Congress to fulfill their representational duties by providing greater opportunities for communication between the Member and individual constituents, supporting the fundamental democratic role of spreading information about public policy and government operations. In addition, electronic technology has reduced the marginal cost of constituent communications; unlike postal letters, Members can reach large numbers of constituents for a relatively small fixed cost. Despite these advantages, electronic communications have raised some concerns. Existing law and chamber regulations on the use of communication media such as the franking privilege have proven difficult to adapt to the new electronic technologies.
This report examines Member use of one specific new electronic communication medium: Twitter. After providing an overview and background of Twitter, the report analyzes patterns of Member use of Twitter during August and September 2009. This report is inherently a snapshot in time of a dynamic process. As with any new technology, the number of Members using Twitter and the patterns of use may change rapidly in short periods of time. Thus, the conclusions drawn from this data can not be easily generalized nor can these results be used to predict future behavior.
The data show that 205 Representatives and Senators are registered with Twitter (as of September 30, 2009) and issued a total of 7,078 "tweets" during the data collection period of August and September 2009. With approximately 38% of House Members and 39% of Senators registered with Twitter, Members sent an average of 116 tweets per day collectively.
Members' use of Twitter can be divided into eight categories: position taking, policy, district or state activities, official congressional action, personal, media, campaign activities, and other. The data suggest that the most frequent type of tweets were district or state tweets (24%), followed by policy tweets (23%), media tweets (14%), and position-taking tweets (14%).