The president nominates a new candidate who must then be approved by congress. It's essentially the same process that's used to select cabinet members.
The secritary
president who died in office that is considered to be the worst president
William Henry Harrison was the first president to die in office. He died after a month in office.
William Henry Harrison was the first president to died in office and the first vice president was George Clinton.
He was Vice President and Roosevelt died in office.
If the president dies then the vice president takes office as president.
== Harrison died in a month == William Henry Harrison was the ninth president of the United States, and the first president to die in office, one month after becoming President. No American president died after just one week in office.
John Tyler
Both were vice-presidents who became president when the elected president died in office.
John Tyler was the vice-president who moved up to President when William Henry Harrison became the first US president to die in office.
3 years he died in office no one nos how he died
The vice-president Calvin Coolidge, took office after Harding died.
Eight Presidents have died in office which four of them were by natural causes but no of them died because of cancer. President Harrison died when he caught pneumonia. President Taylor died from acute gastroenteritis. President Harding suffered a heart attack and President Roosevelt collapsed and died as a result of a cerebral hemorrhage.