- Trump needs the debates or an October surprise to overtake Clinton, says Julian Zelizer
- But history shows there are few genuine game-change moments, 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)After Labor Day, the presidential campaign will move into high gear. The candidates will be racing against the electoral clock and the campaigns will need laser-eyed focus on what their respective path forward is to victory in November.