well...
http://en.wikipedia.org/wiki/D%C3%A1....28May_2007.29
As we can see from these figures, in virtually every case, smaller parties gained a larger proportion of first preference votes than actual seats in the house, while larger parties gained more seats than they did first preference votes. Thus, voters are ranking indepenants and micro-parties first, then placing larger parties below, so that their vote actually counts if the independants dont succeed. This is entirely expected as its pretty much what the STV was set up for, and it would be pretty pointless to select a sure-fire candidate in first, and an outsider in second; given the cast unlikeliness that your vote will be transferred. The Irish public have been voting like this since 1919 and it has even influenced other areas of Irish like, like the preference system for the CAO.
For more reading:
http://proinsias.net/publications/pr...inorities.html
http://www.isye.gatech.edu/~jjb/papers/stv.pdf
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