Modern voting system came from French philosophers Marquis de Condorcet (1743-1794) and Jeans-Charles Borda (1733-1799). Voting system is directly involved with economics, political science and social science. So that if one has no proper knowledge of the voting system then he cannot serve the society in proper way and cannot expect the economic development of the society. Condorcet, Borda and even many modern politicians believe that elections are logically imperfect. Even in the 21st century the voting system in different countries are not fully perfect. Some cases political leaders apply their suitable policies in voting for of their own benefits and many cases they did not see the citizens' welfare. In this book the author has discussed various voting methods which are established by the scholars of the political science. Many organizations and some countries are applying these voting systems in fully or partially. This book has discussed Condorcet voting method, Borda voting, majority judgment of voting, single transferable voting, approval voting and median voting method.