Richard Johnston, Michael G. Hagen, and Kathleen Hall Jamieson. The 2000 Presidential Election and the Foundations of Party Politics. Cambridge, UK: Cambridge University Press. 2004. 216 pp. $55.00 (cloth); $19.99 (paper). Richard R. Lau and Gerald M. Pomper. Negative Campaigning: An Analysis of U.S. Senate Elections. Lanham, MD: Rowman and Littlefield. 2004. 192 pp. $65.00 (cloth); $26.95 (paper).