What to Expect When You’re Expecting a Bounce by Geoffrey Skelley
The convention bounce is a long-established pattern in presidential election cycles. Much has been written about it, so we won’t rehash it too much. The main point is that conventions almost always generate an increase in a nominee’s polling numbers during and after his or her convention, but often times the bounce is short-lived. Still, some of that jump in the polls can be maintained; in this environment, a poll bounce will probably signal increased party unity. This is what is important for Donald Trump and Hillary Clinton: The former needs to get his support among Republicans up to and beyond 90% in the polls (he’s currently in the 80%-85% range) and the latter needs Sanders supporters, many of whom self-identify as independents, to more firmly back her (most surveys have shown a sizable chunk of Sanders voters still outside Clinton’s camp).