He served as the chief whip of majority party in the provincial legislature from May 2019 until October 2022 and then as the Gauteng MEC for Cooperative Governance and Traditional Affairs, eGovernment and Research and Development from October 2022 until June 2024.
A member of the African National Congress, Khumalo served as the Speaker of the Randfontein Local Municipality before he was elected as the Executive Mayor in March 2015, replacing Sylvia Thebenare, who had resigned.
[3] Prior to the August 3, 2016 local government elections, Khumalo was chosen to be the ANC's mayoral candidate for the Rand West City Local Municipality, which was established after the election.
[4][5] The ANC won a majority of seats on the council and Khumalo was elected as the inaugural Executive Mayor.
[8] In 2019 he stood for the Gauteng Provincial Legislature as 24th on the ANC's list of candidates.