单词floating voter
abbr.: (=floater)n.: 游离选民（不确定投哪个政党的票）网络: 浮动选民；浮动投票者；无党派投票人
游离选民（不确定投哪个政党的票）:
a person who does not always vote for the same political party and who has not decided which party to vote for in an election