ECOLOGICAL REGRESSION VERSUS THE SECRET BALLOT

Ecological regression is a statistical mainstay in litigation brought under the voting Rights Act of1965. However, this technique depends on the extremely powerful?and highly questionable?constancy assumption. Loewen and Grofinan have proposed five checks to see whether the constancy assumption is valid. This article shows that these five checks cannot do the job. Indeed, the five checks can be passed with flying colors even when the constancy...