Go to see who:
http://www.dailykos.com/story/2006/10/1/92456/8536.................
http://www.usconstitution.net/consttop_succ.html.......The 25th Amendment reiterates what is stated in Article 2, Section 1: that the Vice President is the direct successor of the President. He or she will become President if the President cannot serve for whatever reason. The 25th also provides for a President who is temporarily disabled, such as if the President has a surgical procedure or if he or she become mentally unstable.
The original Constitution provides that if neither the President nor Vice President can serve, the Congress shall provide law stating who is next in line. Currently that law exists as 3 USC 19, a section of the U.S. Code. This law was established as part of the Presidential Succession Act of 1947. There, the following line of succession is provided:
* Speaker of the House of Representatives
* President Pro Tempore of the Senate
* Secretary of State
* Secretary of the Treasury
* Secretary of Defense.........