What is the meaning of second party leaders in the following sentence?
. Yet, the Likud plus these do not ensure that the figure of 61 can be reached and this is where Mr. Netanyahu is an issue. Parties led by second-rank leaders such as Yair Lapid, Benny Gantz or Gideon Sa’ar are opposed to him as he is the first Israeli Prime Minister on trial for three criminal cases — bribery, fraud and breach of trust.
I looked up the meaning of second party leader on google but didn't find anything.