<Li> Article II, Section 1, Clause 6 makes the Vice President first in the line of succession and allows the Congress to provide by law for cases in which neither the President nor Vice President can serve . The current such law governing succession is the Presidential Succession Act of 1947 (3 U.S.C. § 19). </Li> <Li> Section 3 of the 20th Amendment provides that if the President - elect dies before his term begins, the Vice President - elect becomes President on Inauguration Day and serves for the full term to which the President - elect was elected . The section also provides that if, on Inauguration Day, a president has not been chosen or the President - elect does not qualify for the presidency, the Vice President - elect acts as president until a president is chosen or the President - elect qualifies . Finally, Section 3 allows the Congress to provide by law for cases in which neither a President - elect nor a Vice President - elect is eligible or available to serve . </Li> <Li> The 25th Amendment, ratified in 1967, clarified Article II, Section 1: that the Vice President is the direct successor of the President . He or she becomes President if the President dies, resigns or is removed from office . The amendment also provides for the situation where the President is temporarily disabled, such as if the President has a surgical procedure or becomes mentally unstable . The amendment also provides for Vice Presidential succession, by requiring Vice Presidential vacancies to be filled by the President and confirmed by both houses of the Congress . Previously, whenever a Vice President had succeeded to the Presidency or had otherwise left the office empty (through death, resignation, or removal from office), the Vice Presidency remained vacant until the next Presidential and Vice Presidential terms began . </Li> <P> Article II, Section 1 of the United States Constitution provides that: </P>

Who becomes vice president if the vice president dies
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