Congress's V. Naveen Yadav leads with 8,926 votes against BRS's Maganti Sunitha's 8,864; BJP at 150 votes
48.49% participation from 4.01 lakh eligible voters, the lowest among eight by-polls held across India on November 11.
Process began with 101 postal ballots at 42 tables, EVM rounds to follow, with full results anticipated by midday.