Some @ GAW seem to think he is referring to the SC primary election, which is in Feb 2024, 5 months away.
https://www.thegatewaypundit.com/2023/09/revealed-popular-covid-drug-manufactured-merck-is-causing/
REVEALED: Popular COVID Drug Manufactured by Merck is Causing “Unintended” Virus Mutations, Potentially Fueling COVID’s Spread
IF that’s what he’s referring to, it’s a big nothingburger.
But how would winning the SC primary defeat Biden? Winning that primary doesn't even secure the nomination. Nor would it take the country back and make it great again. Lots of those posts over there, IMHO, are just people twisting themselves into pretzels, trying to ignore or deny what Trump said outright, in very, very plain English.
If this turns out to be another (I'm paraphrasing here) "On November 15, 2022, I will be making one of the most important announcements in the history of this country", he's likely to lose the support of a significant portion of his base, because they would no longer regard his word as reliable. Can he really afford to risk that? I personally don't think so. We'll see what transpires. Until trump proves himself to be the "string-em-along" type, I'm going to take him at his word.