a voting system where, if your preferred candidate (= a person competing to be elected) does not get enough votes to stay in the election, your vote can be given to your second choice of candidate

Some voters favour instant runoff. 部分选民支持采用排序复选制。

Pierce County has adopted instant runoff voting, which requires voters to rank candidates: 1, 2, 3, etc. 皮尔斯县采用了排序复选制，要求选民对候选人按 1、2、3等进行排名。