Nobody has served an eight-year term as U. S. President, but several have served two terms of four years each. These are the Republicans who did so:
The following Republicans did not complete two full terms but were elected twice:
The following Republicans were re-elected after completing someone else's term:
The following U.S. Presidents served two complete terms.
James Madison
James Monroe
Andrew Jackson
Ulysses S. Grant
Woodrow Wilson
Dwight D. Eisenhower
Ronald Reagan
Bill Clinton
George W. Bush
5
11
8
All of them.
He served for a billion years
Five different parties have supplied Presidents - and there have been non-party Presidents * Federalist * Democratic-Republican * Democratic * Whig * Republican
Pierce served as President for one term of four years.
As President, since January 2009.
1 term is equal to 4 years.
Obama has been President since January 20, 2009.
Many, the last was George Bush Jr.
No president other than FDR served for more than 8 years.
No. LBJ died of cancer many years after he served as president.