On March 29, 1952 he surprised Democratic leaders by saying he would not seek re-election
When Truman announced that he would not seek re-election in 
1952,... [DOC] [TLE] Adlai Stevenson II - Wikipedia [PAR] Adlai Ewing Stevenson II was an American politician and diplomat, noted for his 
intellectual demeanor, eloquent public speaking, and promotion of progressive 
causes in the Democratic Party.