Mr. Imasuagbon confirmed his exit from the race to Channels Television on Thursday.
He is the third candidate to withdraw from the race after Governor Godwin Obaseki joined the PDP from the All Progressives Congress.
Obaseki is in pole position to pick up the PDP ticket at the primaries, which is scheduled to hold today, Thursday.
Earlier on Tuesday, Mr. Imasuagbon vowed he would never step down for anyone during his appearance on Channels Television’s Politics Today.