The phrase "to follow the leader" means to imitate or do the same things that someone else is doing.
Sentences with «to follow the leader»
On the other hand, the danger of losing the specifics of their faith has led others to follow leaders who call for closure. (religion-online.org)
Life insurance companies tend to be very independent and they don't usually play follow the leader in what type of life insurance risks they prefer. (bestchoicelifeinsurance.com)
However, the party's MPs have not always followed their leader in the past. (politics.stackexchange.com)