'narrow margin' definitions:

Definition of 'narrow margin'

(from WordNet)
noun
A small margin; "the president was not humbled by his narrow margin of victory"; "the landslide he had in the electoral college obscured the narrowness of a victory based on just 43% of the popular vote" [syn: narrow margin, narrowness, slimness]

Synonyms of 'narrow margin'

From: Moby Thesaurus