Union minister Nitin Gadkari on Tuesday rued that various political parties indulge in divisive politics and people still vote on caste lines despite knowing that caste-based leaders hardly contribute to the growth of their community.

Gadkari was speaking at the first convocation ceremony of the post-graduate course in Leadership, Politics and Governance at the Indian Institute of Democratic Leadership. The institute functions under the aegis of the Rambhau Mhalagi Prabodhini, a training and research academy located near Mumbai.