(optional preference) candidate-centered preference system used in a single-member district where voters rank order the candidates. one that receives the absolute majority wins, if there isn't the candidate with fewest votes is eliminated and his votes reallocated based on second preferences, the process is repeated until one obtains the abs. majority. advantages; less strategic voting, bonds with citizens,less extreme, higher legitimacy if win at 1 race. disadvantages; complex, not genuine majority --(SUPPLEMENTARY VOTE, all candidates but the first two are eliminated and their
second preferences assigned to the remaining two candidates - Sri Lanka)