Rebecca Mercuri, a member of the Computer Science faculty at Bryn Mawr College will be giving two talks on computerized voting systems at the campus during the last week of March. The first talk is appropriate for a more general audience, and the second one is more technical. There will be only minimal overlap of material in the two sessions. Both talks will last about an hour and are open to the public. Attendees should plan to arrive at least a half-hour early in order to allow time to walk to the building (from the train or parking lots). Directions to the Bryn Mawr campus may be found at http://www.brynmawr.edu Talk #1: "Why Computers Can't Count Votes" will be presented at Noon on Tuesday, March 27, Room 338, Park Science Center. The recent Presidential election has demonstrated major difficulties in the democratic process of counting votes. Proponents of electronic and web-based voting systems are quick to criticize punch cards and lever machines as being slow and antiquated. Yet a recent study by MIT and Caltech revealed that the new computer-based systems are inferior to older mechanical and manual technologies. Furthermore, the newly proposed systems promise to also compromise voter privacy and recount capability, a fact that some vendors and election boards do not want voters to know. This talk will explain these issues and present some of the technical challenges for secure electronic voting. Talk #2: "The Electronic Voting Enigma: Hard Problems in Computer Science" will be presented at 4:30 on Friday, March 30, Room 338, Park Science Center. (Reception with the speaker at 4:00 in the Math lounge, 3rd floor.) Although it might appear that modern technology should be able to provide secure, auditable, anonymous elections, this turns out to be a difficult problem for computer scientists. Vote collection and tabulation involves processes for system security, program provability, user authentication, and product reliability, all of which harbor inherent flaws. These matters are further compounded by sociological and legal technicalities -- such as the prevention of vote-selling and protection from denial-of-service attacks. This talk will address these subjects from a computer science standpoint, focusing on those which are considered to be "hard" (the CS word for "presently unsolvable"). Although these computer systems can not achieve all desired election goals, suggestions will be made regarding design enhancements which, if implemented, could improve these devices to the point where they are almost as good as mechanical lever machines and hand-counted paper ballots. Rebecca Mercuri has written extensively and provided expert testimony and commentary on electronic voting systems for the last decade. Her Ph.D. thesis from the University of Pennsylvania's School of Engineering (defended two weeks before the November 2000 election) is titled "Electronic Vote Tabulation Checks & Balances." Since the election, she has been quoted heavily by the media (Associated Press, Newhouse news service, U.S. News and World Report, Wall Street Journal, Philadelphia Inquirer, Los Angeles Times, NPR, WJR, WBAI, KYW and WHYY radio, to name but a few). Her sworn affidavit regarding the necessity of hand recounted ballots is referenced in the U.S. Supreme Court website on the Florida matter. Further information on electronic voting and Rebecca's many other activities may be found at http://mainline.brynmawr.edu/~rmercuri