[4] Rosenblum earned her Bachelor of Arts degree from Radcliffe College and her PhD in Political Science from Harvard University.

[5] Upon earning her PhD, Rosenblum accepted the Henry LaBarre Jayne Assistant Professor position at her alma mater's Department of Government from 1973 until 1977.

[5] Following the publication of Another Liberalism, she authored another book in 1998 titled Membership and Morals: The Personal Uses of Pluralism in America,[12] which received the 2002 David Easton Prize by the Foundations of Political Theory.

[5] In 2010, Rosenblum published On the Side of the Angels: An Appreciation of Parties and Partisanship, in which she argues against criticisms of partisan politics as being polarizing, destructive, and un-democratic, arguing instead that partisanship is essentially a productive force that creates political interests and opinions while also being congruent with the core virtues of democracy.

[17] Rosenblum was named the recipient of a Walter Channing Cabot Fellowship for "distinguished accomplishments in the fields of literature, history, or art, broadly conceived",[18] awarded for On the Side of the Angels, and was elected the Vice-President of the American Political Science Association.

[19] In A Lot of People Are Saying: The New Conspiracism and the Assault on Democracy (2020) Rosenblum and Russell Muirhead examine the history and psychology of conspiracy theories and the ways in which they are used to de-legitimize the political system.