Scholars have long noted the marked advantages of panel surveys for understanding the nature and causes of shifts in public opinion. Despite these advantages, existing panel survey approaches are often regarded as prohibitively costly or unrepresentative. In this paper, we present new evidence...

This paper considers the problem of making inferences about the effects of a program on multiple outcomes when the assignment of treatment status is imperfectly randomized. By imperfect randomization we mean that treatment status is reassigned after an initial randomization on the basis of...