- GOP leaders lamenting the rise of Trump and Cruz should blame themselves, writes Julian Zelizer
- For decades, the party has been eager to get the votes of aggressive conservative base, he says
Julian Zelizer is a professor of history and public affairs at Princeton University and a New America fellow. He is the author of "Jimmy Carter" and "The Fierce Urgency of Now: Lyndon Johnson, Congress, and the Battle for the Great Society." The opinions expressed in this commentary are his.
(CNN)A number of prominent Republicans have been complaining about what is happening to their party.