In the event of a vacancy in the office of President, who shall succeed to that office?

The correct succession to the office of President in the event of a vacancy is held by the Vice President. This is established by the Presidential Succession Act and reinforced by the 25th Amendment to the U.S. Constitution, which explicitly states that the Vice President assumes the presidency if the President dies, resigns, or is removed from office.

The others listed do not have the authority or constitutional right to succeed to the presidency. The position of Secretary, which could refer to various roles such as Secretary of State or other cabinet positions, does not have presidential succession rights. Similarly, the Treasurer does not play a role in this succession line, and the concept of a President-Elect pertains to a candidate who has won the election but has not yet taken office, thus would not be able to ascend to the presidency until officially in office following an election cycle.

Understanding the line of succession is crucial, as it ensures a stable transition of power and maintains the continuity of government.