Sacks predicted that the 2024 U.S. presidential election would be a nail biter that “comes down to a few thousand or a few tens of thousands of votes in swing states.” In reality, while the race was competitive, it was not that razor-thin.

Nationally, Donald Trump won 312 electoral votes to Kamala Harris’s 226, a clear Electoral College margin, and carried all seven major swing states (PA, GA, NC, MI, AZ, WI, NV). He also won the popular vote 49.8% to 48.3%, by roughly 2–2.5 million votes. (en.wikipedia.org)

Analyses of the tipping-point states show the outcome did not hinge on just “a few thousand” votes. The Cook Political Report estimates that the election was effectively decided by about 229,766 votes across Michigan, Pennsylvania, and Wisconsin—still close historically, but an order of magnitude larger than Sacks’s “few tens of thousands” framing. (cookpolitical.com) Moreover, several key swing states had six‑figure margins: Arizona by about 187,000 votes, Georgia by about 115,000, and North Carolina by about 183,000. (en.wikipedia.org)

So although 2024 was closer than a landslide—especially in percentage terms—it was not the ultra‑narrow, “few thousand votes in swing states” scenario Sacks predicted. Hence the prediction is best classified as wrong.