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Mizoram's Independent MLA Lalduhoma was disqualified by Assembly Speaker Lalrinliana Sailo  for "losing the character of an independent legislator".

Highlights

• He is the only politician in the country to have suffered disqualification both as an MP and an MLA.
• He was disqualified as an MLA on the grounds that he had declared himself as a representative of the political party Zoram People's Movement (ZPM).
• Mizoram Assembly Speaker disqualifies leader under anti-defection law
  

Anti-defection law

• Aaya Ram Gaya Ram was a phrase that became popular in Indian politics after a Haryana MLA Gaya Lal changed his party thrice within the same day in 1967.  
• The anti-defection law sought to prevent such political defections which may be due to reward of office or other similar consideration.
• The Tenth Schedule was inserted in the Constitution in 1985.
• It lays down the process by which legislators may be disqualified on grounds of defection by the Presiding Officer of a legislature based on a petition by any other member of the House. 

Source: The Hindu