He contested in the 2024 Indian general election from the Coimbatore Lok Sabha constituency as a candidate of the DMK.

He subsequently completed his Doctorate degree (PhD) in Journalism and Mass communication.

[1] Rajkumar joined the AIADMK in 1989 and was elected as a councillor in the Coimbatore City Corporation in 2001.

[6] Rajkumar joined the DMK on 21 December 2020 in the presence of M. K. Stalin as he felt he was sidelined by the leaders of the AIADMK.

[1] For the 2024 Indian general election, he was selected by the DMK to contest from the Coimbatore Lok Sabha constituency.