Dr. Campbell conducts research in rhetorical criticism, rhetorical theory, political communication, women's communication, and social movement rhetoric.

She is the author or editor of eight books. Her research has appeared in such journals as Quarterly Journal of Speech, Philosophy and Rhetoric, Communication and Critical/Cultural Studies, Rhetoric and Public Affairs, Women's Studies in Communication, and Communication Education.

She is has served as the editor of the Quarterly Journal of Speech and has received the Francine Merritt Award for contributions to women, the National Communication Association Distinguished Scholar Award, the Ehninger Award for Distinguished Rhetorical Scholarship, the Winans-Wichelns Book Award, the Charles Woolbert Award for Scholarship of Exceptional Quality and Influence and the University of Minnesota Distinguished Woman Scholar Award.