by Article I, Section 4, Clause 2, to noon on January3 of the same year, though Congress still can by law set another date and the president can summon special sessions. This change eliminated the extended lame duck congressional sessions. As a result of this change, if the Electoral College vote has not resulted in the election of either a president or vice president, the incoming Congress, as opposed to the outgoing one, would conduct a contingent election, following the process set out in the Twelfth Amendment. Section 3 further refines the Twelfth Amendment by declaring that if the president-elect dies before Inauguration Day, the vice president-elect will be sworn in as president on that day and serve for the full four-year term to which that person was elected. It further states that if, on Inauguration Day, a president-elect has not yet been chosen, or if the president-elect fails to qualify, the vice president-elect would become acting president on Inauguration Day until a president-elect is chosen or the president-elect qualifies; previously, the Constitution did not stipulate what was to be done if the Electoral College attempted to elect a constitutionally unqualified person as president. Section3 also authorizes Congress to determine who should be acting president if a new president and vice president have not been chosen by Inauguration Day. Acting on this authority, Congress added "failure to qualify" as a possible condition for presidential succession in the Presidential Succession Act of 1947. The constitution had previously been silent on this point, and this lack of guidance nearly caused constitutional crises on two occasions: when the House of Representatives seemed unable to break the deadlocked election of 1800, and when Congress seemed unable to resolve the disputed election of 1876. Section 4 permits Congress to statutorily clarify what should occur if either the House of Representatives must elect the president, and one of the candidates from whom it may choose dies, or if the Senate must elect the vice president and one of the candidates from whom it may choose dies. Congress has never enacted such a statute. Effect on the terms of elected officials On February 15, 1933, 23 days after the amendment was adopted, President-elect Roosevelt was the target of an assassination attempt by Giuseppe Zangara. While Roosevelt was not injured, had the attempt been successful, then Vice President-elect John Nance Garner would have become president on March 4,