Английский словарь американских идиом - on the bandwagon

{adj. phr.}, {informal} In or into the newest popular group or activity; in or into something you join just because many others are joining it. - Often used after "climb", "get", or "jump". * /When all George's friends decided to vote for Bill, George climbed on the bandwagon too./ See: JUMP ON THE BANDWAGON.