Stevenson makes it closer than against Ike, but not nearly close enough. America had already had 20 straight years of Democratic administrations, and the Republicans had only been in power since 1953.
Nixon wins a comfortable mandate, promising to carry on the work begun by the enormously popular deceased President, Eisenhower.
No way the voters turn out the Republicans after just one term, following 4 terms of Democrats.
Stevenson was simply not going to become President.
Nixon/Stassen 337
Stevenson/Kennedy 194