Richard Nixon is the only person to have been elected U. S. Vice President twice and elected U. S. President twice. However, to date, nobody has yet served two full terms as Vice President AND two full terms as President.
Many presidents have served two full terms.
14 - nine were vice-presidents that became president when the president died or resigned, and five served out their full terms as elected vice-president, then ran for president and won.
The only president that served three terms is Franklin D. Roosevelt (1933 - 1945).
27 of the 44 US presidents served more than one term in office. 19 of these were elected to more than one term in office. The other 8 served out the term of a president who died in office and were re-elected for a second full term. Only one president served more than two terms, Franklin D Roosevelt, who served three full terms and was elected for a fourth but died in office before finishing that term.
Pierce was not assassinated. He served out his full term and died years later of natural causes.
Of the current (July 2014) First Presidency and Quorum of Twelve Apostles of the Church of Jesus Christ of Latter-day Saints: Thomas S. Monson did not serve as a full-time missionary, but served in the US Navy. He later served as a mission president in Canada. Dieter F. Uchtdorf did not serve as a full-time missionary, but served in the German Air Force. Henry B. Eyring did not serve as a full-time missionary, but served in the US Air Force and as a district missionary. Boyd K. Packer did not serve as a full-time missionary, but served in the US Air Force during WWII. He later served as a mission president in New England. L. Tom Perry served as a missionary in the Northern States Mission (headquartered in Chicago) then served as a Marine in WWII. Russell M. Nelson did not serve as a full-time missionary, but served in medical duty in the US Army during the Korean War. Dallin H. Oaks did not serve as a full-time missionary but served in the Utah National Guard during the Korean War. M. Russell Ballard served as a full-time missionary in England and as a mission president in Canada. He also served in the US Army Reserves. Richard G. Scott did not originally plan on serving as a full-time missionary, but after his girlfried said she would only marry a returned missionary, changed his mind. He served in Uruguay. He later served as mission president in Argentina, where he was Apostle D. Todd Christofferson's mission president. He also served as a Nuclear Engineer for the US military. Robert D. Hales did not serve as a full-time missionary, but served as mission president in England. Jeffrey R. Holland served as a full-time missionary in England, where one of his companions was Apostle Quentin L. Cook. David A. Bednar served as a full-time missionary in Germany. Quentin L. Cook served as a full-time missionary in England, where one of his companions was Apostle Jeffrey R. Holland. D. Todd Christofferson served as a full-time missionary in Argentina, where Apostle Richard G. Scott was his mission president. Neil L. Andersen served as a full-time missionary in France. He later served as a mission president in France.
Yes, Rene Preval served a full term has Haiti's President. He served from 1996 to 2001, and then ran again and was elected in 2006.
President Sanders (Originally Colonel)
Four US Presidents did not appoint any Supreme Court justices:William H. HarrisonZachary TaylorAndrew JohnsonJimmy CarterJimmy Carter is the only President of the four who served a full term.
John Hanson was elected the 8th President of the Continental Congress, which, meant he was President of the United States since there was no constitution at this time. Presidents George Washington (1st) to Barack Obama (44th) are Constitutional Presidents, but George Washington is mistaken to be the actual first president. There were actually 14 presidents (of the Continental Congress) before George Washington actually became President of the United States after the ratification of the Constitution. Each of them served one year terms in the Continental Congress (later, the Confederation Congress). Hanson, was elected President in 1781. He served in that office from November 5, 1781 until November 3, 1782. He was the first President to serve a full term after the full ratification of the Articles of Confederation-and like so many of the Southern and New England Founders, he was strongly opposed to the Constitution when it was first discussed. He remained a confirmed anti-federalist until his untimely death.
Five: John Adams, Thomas Jefferson, Martin Van Buren, Richard Nixon, and George H,W, Bush all served for one or two full terms as vice-president before being elected President. (Four others served partial terms as VP before being elected as President: Ted Roosevelt, Coolidge, Truman and L. B. Johnson. )
FDR was the only president to serve more than two consecutive terms due to the second world war.