An unfortunate typo has been called to the editors' attention in Joshua D. Clinton, Simon Jackman, and Doug Rivers' article, “‘The Most Liberal Senator?’ Analyzing and Interpreting Congressional Roll Calls” (PS, October 2004, 805–811). The header for Figure 3 and Figure 4 (pages 809 and 810, respectively) mistakenly names the current president of the United States “President Bust.” The header should read, in full, “Rank Ordering and 95% Confidence Intervals including President Bush using 62 National Journal Key Votes.” The editors of PS apologize for this unintentional and unfortunate oversight.