1. A New Era of Experimental Political Science James N. Druckman and Donald P. Green; Part I. Experimental Designs: 2. Conjoint Survey Experiments Kirk Bansak, Jens Hainmueller, Daniel J. Hopkins and Teppei Yamamoto; 3. Audit Studies in Political Science Daniel Butler; 4. Field Experiments With Survey Outcomes Joshua Kalla; 5. How to Tame Lab-in-the-Field Experiments Catherine Eckel and Natalia Candelo-Londono; 6. Natural Experiments Rocio Titiunik; 7. Virtual Consent: The Bronze Standard for Experimental Ethics Dawn Teele; Part II. Experimental Data: 8. Experiments, Political Elites, and Political Institutions Christian Grose; 9. Convenience Samples in Political Science Experiments Yanna Krupnikov, Hannah Nam and Hillary Style; 10. Experiments Using Social Media Data Andrew Guess; 11. How to Form Organizational Partnerships to Run Experiments Adam Levine; Part III. Experimental Treatments and Measures: 12. Improving Experimental Treatments in Political Science Diana Mutz; 13. Beyond Attitudes: Incorporating Measures of Behavior in Survey Experiments Erik Peterson; Sean Westwood and Shanto Iyengar; Part IV. Experimental Analysis and Presentation: 14. Advances in Experimental Mediation Analysis Adam Glynn; 15. Subgroup Analysis: Pitfalls, Promise, and Honesty Marc Ratkovic; 16. Spillover Effects in Experimental Data Peter Aronow, Dean Eckles, Cyrus Samii and Stephanie Zonszein; 17. Visualize as You Randomize: Design-Based Statistical Graphs for Randomized Experiments Alexander Coppock; Part V. Experimental Reliability and Generalizability: 18. Transparency in Experimental Research Cheryl Boudreau; 19. Threats to the Scientific Credibility of Experiments: Publication Bias and P-Hacking Neil Malhotra; 20. What Can Multi-Method Research Add to Experiments? Jason Seawright; 21. Generalizing Experimental Results Erin Hartman; 22. Conducting Experiments in Multiple Contexts Graeme Blair and Gwyneth McClendon; 23. Identity Experiments: Design Challenges and Opportunities for Race and Ethnic Politics Amber Spry; 24. The Evolution of Experiments on Racial Priming Ali Valenzuela; 25. The Evolution of Experiments on Gender in Elections Samara Klar and Elizabeth Schmitt; 26. Gender Experiments in Comparative Politics Amanda Clayton and Georgia Anderson-Nilsson; 27. Experiments on and with Street-Level Bureaucrats Noah Nathan and Ariel White; 28. Corruption and Corruption Control Paul Lagunes and Brigitte Seim; 29. Experiments on Political Activity Governments Want to Keep Hidden Jennifer Pan; 30. Experiments in Post-Conflict Contexts Aila Matanock; 31. Experiments on Problems of Climate Change Mary McGrath; 32. A Constant Obsession with Explanation; Lynn Vavreck.