Introduction: Studying Leadership in American PoliticsPart 1: Leadership from the Top 1 House Leadership and the Speakership of John Boehner 2 Leaders and Partisanship in the Modern Senate 3 A President's Decisions and the Presidential Difference 4 Presidentaial Leadership in American Foreign Policy 5 Great Judges: Judicial Leadership in Theory and PracticePart 2: Leadership Across Institutions 6 Parties and Leadership in American Politics 7 Leadership and Internet Groups 8 Leadership and the Bureaucracy 9 Leadership in the States Part 3: Assessing Leadership in American Politics 10 Leadership: A Definition 11 Filters and Pegs in Holes: How Selection Mechanisms and Institutional Positions Shape (Perceptions of) Political Leadership 12 What Do Politicial Leaders Do?Notes on ContributorsIndex