On September 14 , 1960 he accepted the nomination , giving almost a 20 - minute speech defending American Liberalism and his campaign .
In 1960 the Liberal Party endorsed John F. Kennedy for president .
On September 14 , 1960 John F. Kennedy accepted the nomination , giving almost a 20 - minute speech defending American Liberalism and John F. Kennedy 's campaign .
In 1960 the Liberal Party endorsed John F. Kennedy for president .