The online outbursts have become customary during presidential election cycles: “I’m moving to Canada!” And this week saw plenty of them, as Hillary Clinton and Donald J. Trump collected victories on Super Tuesday.

That night, Google recorded a sharp rise in searches that included the phrase “move to Canada,” and many Twitter users vowed to flee north. Reports of the Canadian immigration website buckling under heavy traffic were, however, exaggerated. That was an unrelated technical problem, the agency said.

By Wednesday, news organizations were offering helpful guides on how to flee the United States.

This is mostly talk, of course. Recent American political history is strewn with the empty promises of self-exile from the losing side. (See Eddie Vedder, Robert Altman and Rush Limbaugh, among others.)

In the latest go-round, much of the dismay seems focused on the political ascendance of Mr. Trump. Thousands of Americans, including at least a few celebrities, claim to be exploring their options.