Maharashtra Political Crisis: What is a floor test that will decide the fate of Uddhav Thackeray?

BJP leader Devendra Fadnavis urged Maharashtra Governor Bhagat Singh Koshyari to ask Uddhav Thackeray to prove his party's majority.Fadnavis, a former chief minister, claimed the Shiv Sena-NCP-Congress ruling coalition seemed to be in a minority as 39 Sena MLAs, who belong to the rebel faction.BJP leader Devendra Fadnavis urged Maharashtra Governor Bhagat Singh Koshyari to ask Uddhav Thackeray to prove his party's majority.Fadnavis, a former chief minister, claimed the Shiv Sena-NCP-Congress ruling coalition seemed to be in a minority as 39 Sena MLAs, who belong to the rebel faction.