Kharge will lock horns with Shashi Tharoor and Jharkhand Congress leader KN Tripathi.
Former Madhya Pradesh Chief Minister Digvijaya Singh was all set to run for the Congress president, but a twist of fate saw him pulling out of the race.
Former Madhya Pradesh Chief Minister Digvijay Singh on Friday opted out of the election for the post of Congress president.
The entry of Kharge, who is also the Leader of Opposition in Rajya Sabha, has made the contest triangular with veteran party leaders Digvijaya Singh and Shashi Tharoor already in the fray
Hours after Rajasthan Chief minister Ashok Gehlot met Sonia Gandhi, his former deputy Sachin Pilot also met the Congress interim chief late on Thursday evening.