Why Congress is pushing hard for Maharashtra's lone Rajya Sabha seat With 72 Rajya Sabha seats falling vacant this year, the Congress party faces a crucial test of numbers that could determine whether it retains the Leader of Opposition (LoP) position. With the retirement of senior Congress leaders shortly and the party falling short of the threshold numbers to fetch the LoP post, negotiations have begun. AdvertisementVoting for 37 Rajya Sabha seats across 10 states,will be held on March 16, 2026.