That may be the plan. FJB “dies suddenly”, it’s been happening regularly now so it won’t be suspiscious.
PDJT wins the election by a massive landslide, but the leftists will then claim that is only because he ran “unopposed” / replacement candidate didn’t have chance to get votes, and thereby deny PDJT has a mandate to pursue the promises made during the campaign. Block him / sue him at every opportunity with that talking point.
Or somebody takes out FJB, and then they find a rifle and a MAGA hat right next to it.