When the current president dies. Also if the current president resigns from office. Also if the president is impeachedAdded: . . . or becomes too ill or incapacitated to carry out his duties,
If Obama dies in office, his vice President, Joe Biden, becomes the next President.
The Vice President
If the president is mentally disabled and refuses to leave office or do his job, he can be impeached and kicked out. Only a few presidents have been impeached. Andrew Johnson, the man who served after Lincoln was shot, was impeached. One of the articles of impeachment was that he spoke too loud in the senate.
If he dies in office, then Dick Cheney becomes President.
The Vice President and the Senate would need to vote to decide if the president is disabled enough that he can not serve anymore. The president can also resign if he feels he can not serve anymore.
The vice president becomes the president if the president dies. Such is the main reason for the office of vice president.
If the president dies then the vice president takes office if the vice president dies then the speaker of office is president
The Speaker of the house becomes president
The Vice-President.
Vice Pres
=maybe they reelcted the president=