Nominated Senator Elizabeth Ongoro on Friday left ODM for Musalia Mudavadi's Amani National Congress party.
ANC Secretary-General Osotsi said Mudavadi will receive Ongoro to the party at Amani House.
Ongoro's supporters were seen at the Amani premises eagerly waiting for the nominated senator to arrive.
Her move comes after she was fined Sh1 million by the ODM disciplinary committee following the attack on executive director Oduor Ong'wen.
The party asked her to apologise for storming Orange House after Ruaraka MP Tom Kajwang was handed a direct ticket.
The committee recommended that she seeks the MP seat in another constituency 'for peace's sake'.
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"Ongoro tena..Ongoro tena. We will not allow Ongoro to be used again," her supporters shouted on Friday.
"Mimi nimekuja hapa juu tuko na mama fully. Hatutabanduki na tunataka maendeleo iendelee mbele," they said.
(I am here because I support Ongoro fully. We will not leave her since we want development to continue)
The supporters said they will be no peace in Ruaraka sub-county if Ongoro is not on the ballot on August 8.
Last month, Ongoro said she is in ODM to stay but noted she can no longer be silent about intimidation and frustration.
The legislator said she will be on the ballot whether her rivals like it or not.