The recent polling surge by Donald Trump has launched a thousand stories about Trump’s “unprecedented campaign.” But it’s nothing all that unusual: Similar surges occurred for almost every Republican candidate four years ago, including Herman Cain, Michele Bachmann, Rick Santorum and Newt Gingrich (twice).

History’s lesson isn’t necessarily that Trump’s candidacy will go bust tomorrow, however. There are plenty of examples of fringe or factional candidates who held on to their support for much longer than the month or two that Cain and Bachmann did. Sometimes, they did well enough in Iowa or New Hampshire, or even won them. Pat Buchanan claimed New Hampshire in 1996, for instance, while Mike Huckabee won Iowa in 2008. Steve Forbes took 30 percent of the Iowa vote in 2000.

The lesson, rather, is that Trump’s campaign will fail by one means or another. Like Cain, Bachmann and Gingrich, Buchanan, Huckabee and Forbes came nowhere close to winning the Republican nomination.