Nagesh Patil Ashtikar and Omprakash Raje Nimbalkar have defected from Shiv Sena (UBT) to the Eknath Shinde-led faction.
The MPs cited dissatisfaction with remarks made by party leadership and the constraints of being in the Opposition as key reasons.
Union Home Minister Amit Shah recently stated that the Shinde-led faction is now the only legitimate Shiv Sena.
Uddhav Thackeray countered by asserting that his faction remains the only true Shiv Sena, highlighting ongoing political tension.