- Some Democrats are giddy about the possibility of Donald Trump winning the Republican nomination, says Julian Zelizer
- Zelizer: But other Democrats, including Bill Clinton, fear Trump could be formidable in general election
- Zelizer says there are some parallels -- but also differences -- between this race and Goldwater vs. Johnson in 1964
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)Some Democrats are giddy about the possibility of Donald Trump winning the Republican nomination. They see him as the perfect antidote to the many gains Republicans have made over the past decade in state and congressional politics.