Under Representation of Peoples Act the member of the Parliament or the Legislative Assembly can be disqualified if he is proved to be guilty of any offence or he is convicted.
The supreme court in the below decision has upheld this fact.
WRIT PETITION (CIVIL) NO. 490 OF 2005
Lily Thomas … Petitioner
Versus
Union of India & Ors. … Respondents
WITH
WRIT PETITION (CIVIL) NO. 231 OF 2005
Lok Prahari, through its General Secretary
S.N. Shukla … Petitioner
Versus
Union of India & Ors. … Respondents
So a murder convict is disqualified to be a MP.