freediver wrote on Oct 8
th, 2008 at 3:56pm:
Thanks that is clearer especially FPTP.
For the purpose of discussion lets use definition of PV IRV from wiki:
Quote:Preferential voting (or preference voting) is a type of ballot structure used in several electoral systems in which voters rank a list or group of candidates in order of preference. For example, the voter may write a '1' beside their first choice, a '2' beside their second preference, and so on.
Quote:Instant-runoff voting (IRV) is a voting system used for single-winner elections in which voters have one vote and rank candidates in order of preference.
So FPTP is simpler that is an advantage.
PV on another hand is more complicated .
So here we have three candidates: a, b, c
Suppose a voter likes "c" and hates "b" and "a"
In FPTP he votes for "c" and if "c" gets enough votes from other voters "c" gets in else not.
In PV a voter may rank "c" as 1, "a" as 2, "b" as 3 and if "c" gets enough 1s from other voters "c" gets in same as in FPTP
There may be situation when 100 voters allocate their preferences as follows:
"a" gets 33(1),34(2),34(3); "b" gets 33(1),33(2),33(3); "c" gets 34(1),33(2),33(3).
Easier for politicians to confuse voters by creating bogus parties.
IMHO. the simpler the system the easier it is to see the trickery.