<P> Later in the 18th century, apportionment methods came to prominence due to the United States Constitution, which mandated that seats in the United States House of Representatives had to be allocated among the states proportionally to their population, but did not specify how to do so . A variety of methods were proposed by statesmen such as Alexander Hamilton, Thomas Jefferson, and Daniel Webster . Some of the apportionment methods devised in the United States were in a sense rediscovered in Europe in the 19th century, as seat allocation methods for the newly proposed method of party - list proportional representation . The result is that many apportionment methods have two names; Jefferson's method is equivalent to the d'Hondt method, as is Webster's method to the Sainte - Laguë method, while Hamilton's method is identical to the Hare largest remainder method . </P> <P> The single transferable vote (STV) method was devised by Carl Andræ in Denmark in 1855 and in the United Kingdom by Thomas Hare in 1857 . STV elections were first held in Denmark in 1856, and in Tasmania in 1896 after its use was promoted by Andrew Inglis Clark . Party - list proportional representation began to be used to elect European legislatures in the early 20th century, with Belgium the first to implement it for its 1900 general elections . Since then, proportional and semi-proportional methods have come to be used in almost all democratic countries, with most exceptions being former British colonies . </P> <P> Perhaps influenced by the rapid development of multiple - winner electoral systems, theorists began to publish new findings about single - winner methods in the late 19th century . This began around 1870, when William Robert Ware proposed applying STV to single - winner elections, yielding instant - runoff voting (IRV). Soon, mathematicians began to revisit Condorcet's ideas and invent new methods for Condorcet completion; Edward J. Nanson combined the newly described instant runoff voting with the Borda count to yield a new Condorcet method called Nanson's method . Charles Dodgson, better known as Lewis Carroll, proposed the straightforward Condorcet method known as Dodgson's method as well as a proportional multiwinner method based on proxy voting . </P> <P> Ranked voting electoral systems eventually gathered enough support to be adopted for use in government elections . In Australia, IRV was first adopted in 1893, and continues to be used along with STV today . In the United States in the early - 20th - century progressive era, some municipalities began to use Bucklin voting, although this is no longer used in any government elections, and has even been declared unconstitutional in Minnesota . </P>

Which of the following is not a feature of election system in india