- Julian Zelizer: It's not the first time that a Romney has powerfully attacked the GOP frontrunner for president
- Romney's father George opposed Barry Goldwater in 1964, and correctly predicted he would lose in a landslide
- Yet George Romney was seeking a broader, less conservative party while his son is looking for ideological purity, Zelizer 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)Former Republican presidential nominee Mitt Romney launched a blistering attack on Donald Trump. In an effort to change the dynamic of this primary season, Romney offered blistering words, characterizing Trump as a "fraud" and a "phony" who needed to be stopped. He said that Trump was "playing the American public for suckers."