Dynamics of challenger quality : introduction
Challenger quality : conceptualization and measurement : literature review
Explaining challenger quality : hypotheses and methodology
Money and challenger quality
Candidate quality and communication strategy
Movin' on up : the impact of state legislative term limits on candidate quality in U.S. House elections, 1972-2014
States of ambition : aggregate challenger quality in the U.S. States, 1972-2014
Explaining the decline in challenger quality, 1972-2014
Challenger quality, incumbency advantage and democracy in America
Conclusion.