Notes Oct 3 2013 1 Plurality voting whoever gets the most votes wins most common way to vote in the US 25 Hilary Clinton 21 Paul Ryan Now neither of them are running Vote again 22 Joe Biden 19 Newt He was not the majority choice The winner only got 22 When you have multiple candidates in early presidential primaries sometimes a candidate will win who is generally acceptable to a lot of people but the one with the most votes is usually very extreme Problem with plurality voting Here in GA it s required that someone has to win for governor senator etc by majority later another vote between the top two 2 Plurality with a runof Vote between Biden and Gingrich because they were the top two Biden 43 Gingrich 57 Will choose their nominee with primaries Closed only republicans can vote in republican primary and vice versa for democrats Open Independents can also vote in either primaries 3 Closed Party Primary Republicans 41 Rand Paul 40 Next Gingrich 19 Marco Rubio Closed Party Primary Democrats 71 Joe Biden 16 Al Gore 14 Nancy Pelosi General Election Rand Paul 52 vs Joe Biden 48 Voting System has an impact on who wins We had three votes and three diferent winners There s no system that guarantees that the result will be a perfect representation of the group 4 Open Primary For republican a republican or an independent can vote Vice versa for Democrats Independents can t vote in both so they have to decide Open Democrat 61 Joe Biden Al Gore 24 Nancy Pelosi 14 Open Republican Newt Gingrich 40 Marco Rubio 23 Rand Paul 37 General Election Biden 43 vs Gingrich 57 5 Instant Runof very old aka single transferable vote STV vote for your first choice and also indicate your other choices then the machine will tally them up and see who comes in last and this person is eliminated those votes for the loser are automatically transferred to the next person repeated over and over until theres only one lef 1st loser Jesse Ventura 2nd loser Nancy Pelosi 3rd loser Al Gore Gary Johnson 4th loser Marco Rubio 5th loser Rand Paul 6th loser Biden Gingrich wins You usually vote for your first choice but you would be happy with some of your other choices 6 Approval Voting 1970s you vote for all the ones you approve of 108 Gingrich 97 Rand Paul 96 Rubio 85 Biden 71 Gore 64 Pelosi 60 Johnson 39 Ventura 7 Electoral College system originally written into the constitution only US uses each state will choose electors and electors will vote 2 people 20 Gingrich 17 Paul 13 Rubio 19 Biden 13 Gore 7 Pelosi 8 Johnson 3 Ventura Gingrich is President Biden is vice president Adams president Jeferson vp fought because they were mortal enemies and opposite parties That s why we vote for president and vice president of the same party Biden won once Paul won once Gingrich won five times Does this mean Gingrich is the true winner There s no voting system that guarantees that the preference of the group will be reflected 8 Condorcet closest to the perfect system it usually chooses best reflection of group preference sometimes it doesn t come up with a winner or sometimes with more than one actually going into voting booth according to this system takes a very long time of these two who do I prefer in multiple pairings every possible combination with 5 candidates you have to vote 15 separate times Can do something like this system you can figure out who would win Any candidate who can defeat or tie any other candidate is the winner Biden vs Gingrich Gingrich wins Biden vs Paul Paul wins Gingrich vs Paul Gingrich wins