Who has the authority to fill a vacancy in the House of Representatives?

The authority to fill a vacancy in the House of Representatives lies with the Governor of the state where the vacancy occurs. When a seat becomes vacant, such as through resignation or death, it is typically the responsibility of the state's Governor to call for a special election or to appoint someone to fill the position temporarily until an election can be held.

The President does not have the power to directly fill vacancies in the House of Representatives. Similarly, the Senate does not have authority over the House in this process, as each chamber of Congress operates independently regarding its own members. The House Speaker also does not have the authority to fill vacancies, as this function is designated to the state's executive branch.

Thus, the correct understanding of how vacancies are filled in the House of Representatives emphasizes the role of the state's Governor in managing the process according to state law and election procedures.