Jubilee senator Isaac Mwaura loses seat Jubilee nominated Senator Isaac Mwaura has lost his seat after Senate Speaker Kenneth Lusaka declared the seat vacant in a gazette notice. “IT IS notified for the information of the general public that pursuant to Article 103 (1) (e) (i) of the Constitution and section 37 of the Elections Act, the seat of the Member of the Senate elected under Article 98 (1) (d) of the Constitution and held by Hon. Isaac Mwaura Maigua became vacant, with effect from the 7th May, 2021,” the notice read. The embattled nominated Senator had challenged the decision of Jubilee National Disciplinary Committee that sent him packing.