By the spring conventions in the required nine states had ratified, and the Constitution could become law. But with powerful, populous, and highly divided Virginia and New York yet to vote, the legitimacy of the new national system had not yet been fully resolved. A Biography of John Hancock.
Abraham Lincoln was elected for two terms, but only served one of them in full. &nbsp;His first term began on March 4, 1861. &nbsp;He was re-elected in 1864 and began his second term on March 4, 1865, but was assassinated after only 42 days, dying in office on April 15, 1865.
Three presidents served only one full term but were elected to second terms which they could not complete. - Abraham Lincoln and William McKinley served only a few weeks or months of their second terms before being assassinated, and Richard M Nixon, resigned 19 months into his second term.