游离票 （swing voter），又称中间选民，指的是在一次选举未有在事前决定投票意向的人士。这些人比较依靠选举前夕的宣传、议题和事件决定立场，而非某候选人或政党的坚定支持者。

与之相对的选民称为铁票。一般的选举中由于游离票常是致胜关键，故为各政党争取支持的对象。

A swing vote is a vote that is seen as potentially going to any of a number of candidates in an election, or, in a two-party system, may go to either of the two dominant political parties. Such votes are usually sought after in elections, since they can play a big role in determining the outcome.