The unexpected death of a President-elect prior to their official swearing-in presents a complex constitutional and political scenario. The United States Constitution, while outlining presidential succession, does not explicitly address this particular circumstance in exhaustive detail. Existing constitutional provisions and historical precedent, however, provide a framework for understanding the potential course of action.
The primary consideration centers around the Vice President-elect. Typically, upon the death of the President-elect, the Vice President-elect would ascend to the presidency. This is supported by the intent of the 12th Amendment, which sought to create a ticket for president and vice president where they are elected jointly. The Vice President-elect is considered to be ready to take office. Historically, the death of a president has always resulted in the vice president taking over without question.