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 presentation of the Annual Budget before the parliament is one of the mechanisms available to any legislature to scrutinise and authorise revenues and expenditures of the country.   In this post I quote and summarise from two sources (Rick Stapenhurst, "The legislature and the Budget", in Legislative Oversight and Budgeting, World Bank Institute Development Studies, and The evolution of parliament’s power of the purse) which describe briefly how oversight by the legislature over the state's finances evolved historically. "The evolution of legislative "power of the purse" dates back to medieval times, when knights and burgesses in England were summoned to confirm the assent of local communities to the raising of additional taxes."  By the 1300s the English parliament had begun to use its power to vote on funds depending on the acceptance of petitions presented by parliament to the monarch.  In 1341, the monarch agreed that citizens should not be taxed ("charged or grieved to make common aid or sustain charge") without the assent of Parliament. "In parallel, the English Parliament began to take an interest in how money was collected, as well as how it was spent."  In the 1300's itself, it started appointing commissioners to audit the accounts of tax collectors. This power of oversight however evolved gradually, and particularly over the 16th century, when the "monarchs needed parliamentary support and voting of funds for their various political and religious battles.  King Henry VIII for example, gave Parliament enhanced status in policy making, in return for support during his battles with Rome." The 1689 Bill of Rights firmly established "the principle that only Parliament could authorize taxation.  Still, at this stage there was still no such thing as an annual budget, and there was no comprehensive control of expenditures."  The British Parliament also passed a resolution in 1713 to limit Parliament's power to "not vote sums in excess of the Government’s estimates. Consequently, the only amendments that are in order are those which aim to reduce the sums requested." "Since that time, the "power of the purse" function has been performed by legislatures around the world as a means to expand their democratic leverage on behalf of citizens."