Wordnet 3.0
NOUN (1)
1.
the phenomenon of a popular trend attracting even greater popularity;
- Example: "in periods of high merger activity there is a bandwagon effect with more and more firms seeking to engage in takeover activity"- Example: "polls are accused of creating a bandwagon effect to benefit their candidate"
WordNet (r) 3.0 (2006):
bandwagon effect
n 1: the phenomenon of a popular trend attracting even greater
popularity; "in periods of high merger activity there is a
bandwagon effect with more and more firms seeking to engage
in takeover activity"; "polls are accused of creating a
bandwagon effect to benefit their candidate"