Sinn Féin's Michelle O'Neill has said she intends to put herself forward for the position of deputy leader of the party.
Ms O'Neill, the party's Northern Ireland leader, said she wants to join president-elect Mary Lou McDonald in her leadership.
Nominations will begin tomorrow to select a new vice president.
The move comes after Ms McDonald was named as leader-elect at a meeting of Sinn Féin's ard comhairle in Belfast yesterday.
Ms O'Neill took to Twitter today to announce her desire to become Ms McDonald's deputy.
In a video post she said: "Mary Lou McDonald is our new president-elect. She is going to be a formidable political leader. I want to join her in her leadership."
She added: "I am going forward for the position of vice president of our party. I am going to ask the membership across the island for their support in order to do so."
The party's national chairman Declan Kearney MLA said the nomination process for deputy leader will close on Monday 29 January.
The new leader and deputy leader will be officially elected at a special Sinn Féin Ard Fheis on 10 February.
