Shinui's central committee approved on Thursday evening the motion to split the party, with 66 members supporting the breakup, and eight opposing it.
The split began after MK Avraham Poraz lost the number two spot on Shinui's Knesset list in the party's primaries. He then resigned the party, taking several other MKs with him.
Chairman Yosef Lapid remained at the party's helm for about two weeks mulling his political future until he finally resigned on Wednesday.
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