0 the act of voting for a political party or person that you would not usually support in order to prevent another party or person from winning -- 策略性投票（为防止另一政党赢得选举而把票投给自己并不支持的一个政党）
The reason for that bias is entirely to do with tactical voting.
The experience of the 1992 general election, in which tactical voting was urged, suggests that the present system is not ideally suited to tactical voting.
Of course there are some situations in which tactical voting, even mass tactical voting, is justified.
The definition of tactical voting developed here is designed to express the insights from rational choice theory in a language that can be commonly understood.
The similarity between the reported levels of tactical voting for the two measures does not tell us they are similar measures.
They sought to create conditions that would be favourable for tactical voting.
One of the great advantages of the alternative vote is that it makes unnecessary any form of tactical voting.
So this section will largely take for granted that it is only tactical voting away from parties expected to come third or lower in the constituency that is being measured.
