In the late 1960s and 70s, defections (elected legislators changing parties after the election) in Parliament and State Legislatures became very frequent, so frequent in fact, that the epithet "Aaya Ram Gaya Ram" was coined to describe the same.  To curb this problem which created instability in our legislatures, Parliament amended the Constitution.  They inserted the Tenth Schedule to the Constitution "to curb the evil of political defections".  As a result, we currently have an anti-defection law with the following features: 1.  If an MP/MLA who belongs to a political party voluntarily resigns from his party or, disobeys the party "whip" (a direction given by the party to all MPs/ MLAs to vote in a certain manner), he is disqualified.   The party may however condone the MP/ MLA within 15 days. 2.  An independent MP/ MLA cannot join a political party after the election. 3.  An MP/ MLA who is nominated (to the Rajya Sabha or upper houses in state legislatures) can only join a party within 6 months of his election. 4.  Mergers of well-defined groups of individuals or political parties are exempted from disqualification if certain conditions are met. 5.  The decision to disqualify is taken by the Speaker/ Chairman of the House. The table below summarizes provisions of anti-defection law in some other countries.  (For more, click here).  As one may note, a number of developed countries do not have any law to regulate defection.

Regulation of defection in some countries

Country Experi-ence Law on defection The Law on Defection
Bangladesh Yes Yes The Constitution says a member shall vacate his seat if he resigns from or votes against the directions given by his party.  The dispute is referred by the Speaker to the Election Commission.
Kenya Yes Yes The Constitution states that a member who resigns from his party has to vacate his seat.  The decision is by the Speaker, and the member may appeal to the High Court.
Singapore Yes Yes Constitution says a member must vacate his seat if he resigns, or is expelled from his party.  Article 48 states that Parliament decides on any question relating to the disqualification of a member.
South Africa Yes Yes The Constitution provides that a member loses membership of the Parliament if he ceases to be a member of the party that nominated him.
Australia Yes No  
Canada Yes No  
France Yes No  
Germany Yes No  
Malaysia Yes No  
United Kingdom Yes No  

The nominations for all phases of the General Election have been submitted.  We examine highlights from data on candidates who are participating in the ongoing elections.  There are 8,039 candidates contesting for 542 Parliamentary constituency seats.
 

On average, 14.8 candidates are contesting per constituency across the country.  Among all the states, Telangana has the highest average number of candidates contesting.  This is primarily due to 185 contestants from Nizamabad.  Excluding Nizamabad, the state’s average number of contestants would be 16.1.  

 

The Election Commission of India recognises parties as either national or state parties based on their performance in previous elections.  Delhi and Haryana have a high number of candidates contesting from parties that have not been recognised as either national or state parties.

After Telangana, Tamil Nadu has the highest average of independent candidates contesting in this election.  On average, of the candidates in each constituency in Tamil Nadu, two-thirds are contesting as independent candidates.  

 

After Nizamabad, the second highest number of candidate representation is seen in Belgaum, Karnataka.  The five constituencies that have the highest candidate representation are from the southern states of Telangana, Karnataka, and Tamil Nadu.    

 

The Bharatiya Janata Party and Congress are contesting 435 and 420 seats respectively.  In 373 seats they are in competition with each other.  BSP has the third highest number of candidates contesting in this election.

The seven national parties together fielded 2.69 candidates per constituency.  Among the largest five states, West Bengal has the highest representation of candidates from national parties, at 4.6.  In that state, candidates from five national parties are contesting.

Recognised state parties, together, fielded 1.53 candidates per constituency.  Bihar (6 state parties) and Tamil Nadu (8 state parties) see a high representation of candidates from state parties, at 1.2 and 1.3 respectively.

Largest states are ones with more than 30 Parliamentary constituency seats: Uttar Pradesh (80), Maharashtra (48), West Bengal (42), Bihar (40), and Tamil Nadu (39).  These states together have 249 seats i.e., 46% of Lok Sabha.

For these five states, the number of seats being contested by national and state parties is shown in the figures below.  

This analysis is based on the candidate list available on the Election Commission website (eci.gov.in) on May 8, 2019.