The new MLCs include Chief Minister Prithviraj Chavan's close associate Anandrao Patil.
Ramhari Rupanwar, who hails from politically influential Dhangaar community and is considered to be close to state Congress chief Manikrao Thakare, is another new MLC to be sworn in from Congress's side.
The other two are Husna Bano Khalife and Mumbai Congress chief Janardan Chandurkar, a Dalit leader.
The new members from NCP are former Shiv Sena spokesperson Rahul Narvekar who crossed over to NCP before the Lok Sabha polls, former Republican Party of India leader Prakash Gajbhiye, Vidya Chavan, Khawaja Baig, Ramrao Wadkule, and Jagannath Shinde.