bandwagon
noun
VERB + BANDWAGON climb on, join, jump on Competitors have jumped on the bandwagon and started building similar machines.
BANDWAGON + VERB be rolling, gather momentum/pace, sweep along The Scottish Nationalist bandwagon is gathering pace.| slow down
BANDWAGON + NOUN effect There is now a bandwagon effect with more and more firms joining the scheme.
PHRASES get/start a bandwagon rolling They seem to have got an anti-government bandwagon rolling.