Analysis of information sources in references of the Wikipedia article "Lindsey Graham 2016 presidential campaign" in English language version.
The country has not elected a bachelor president since 1884, when Grover Cleveland won the White House.........The last unwed candidate chosen by a major party was Adlai Stevenson, the divorced Democrat who lost to Republican Dwight Eisenhower twice in the 1950s.
The last unwed candidate chosen by a major party was Adlai Stevenson
Adlai E. Stevenson, the divorced Democrat from Illinois who was defeated by Republican Dwight D. Eisenhower in 1952 and 1956.