For instance, when George Washington University political scientist John Sides looked at five events from the 2008 campaign identified by the journalists Dan Balz and Haynes Johnson in their book The Battle for America as especially significant, he found they had “basically had no impact on voters nationwide.” Likewise, a comprehensive review of pre-election trial heat polls by the political scientists Christopher Wlezien and Robert S. Erickson (gated) found that “During the early campaign—roughly the 100 days preceding the late-summer conventions—campaign shocks are large but temporary; news about the campaign affects voters but is eventually forgotten and thus has little impact on the final outcome.”

We’re currently 158 days from the Republican convention, and “Etch a Sketch-gate” will likely prove to be just as inconsequential. By the time the general election rolls around, the incident will most likely be forgotten. And even if it remains salient, it’s unlikely to change voters’ minds since, as Cillizza concedes, “How you view the Etch a Sketch incident…depends in large part on how you view Romney.” Better to rethink how you view the “freak show” aspect of the political press instead.

Brendan Nyhan is an assistant professor of government at Dartmouth College. He blogs at brendan-nyhan.com and tweets @BrendanNyhan.