Every third of the newly elected member of Lok Sabha has a criminal background, an analysis of the disclosures they have made in their affidavits has shown. 
An analysis of 541 of the 543 winning candidates by National Election Watch and Association for Democratic Reforms shows that 186 or 34%t newly elected MPs have in their election affidavits disclosed criminal cases against themselves. In 2009, 30% of Lok Sabha members had criminal cases. This has now gone up by 4%.
Criminal Antecedent
Party                   MPs
BJP                        98 
Cong                      08 
AIADMK               06
Shiv Sena              15
Trinamool Cong   07
A candidate with criminal cases had 13% chance of winning in 2014 Lok Sabha election whereas it was 5% for an aspirant with a clean record. 
Of the 186 new members, 112 (21%) have declared serious criminal cases, including those related to murder, causing communal disharmony, kidnapping, crimes against women etc. Party wise, the largest numbers 98 or 35% of the 281 winners from BJP have in their affidavits declared criminal cases against themselves. Eight (18%) of the 44 winners from Cong, six (16%) of the 37 winners from AIADMK, 15 (83%) of the 18 winners from Shiv Sena, and seven (21%) of the 34 winners fielded by Trinamool Cong also have disclosed criminal cases against themselves.