The literature dealing with undecided voters – a growing group of citizens in many democracies that can determine who wins in election campaigns – suggests two very different profiles. The first approach describes undecided voters as being generally uninformed about politics, while the second sees undecideds as sophisticated citizens who follow a campaign closely before making their final voting decision. The current study tries to make sense of this contrast, while examining differences between sophisticated and less sophisticated undecideds (their level of sophistication was based on their political interest and knowledge). Using two panel surveys, conducted before and after the April 2019 elections in Israel (N = 1427; N = 912), we examine a number of hypotheses about differences in terms of the undecided citizens' demographic backgrounds, how they search for political information during the election campaign, how they come to make their final decisions, and whether they ended up voting. The findings indicate that the typical sophisticated undecided voter is a citizen from a more privileged social background, exhibits greater trust in traditional media, consumes more news to follow the campaign (from various traditional news outlets and social media), is more likely to carry out online discussions about the elections, is more likely to base his or her decision on policy issues, is more likely to debate between parties within the same ideological camp (internal floater), and more likely to vote than less sophisticated undecided voters. Our typology, which makes a distinction between sophisticated and less sophisticated undecided voters, as well as these findings (and the comparison to the committed voters), can help political scientists and practitioners widen their understanding regarding this important group of voters in todays' complex political reality.

处理未决选民的文献——许多民主国家中越来越多的公民可以决定谁在竞选活动中获胜——表明了两种截然不同的情况。第一种方法将未决定的选民描述为通常对政治一无所知，而第二种方法将未决定的选民视为在做出最终投票决定之前密切关注竞选活动的老练公民。当前的研究试图理解这种对比，同时检查老练和不老练的未定论者之间的差异（他们的老练程度基于他们的政治兴趣和知识）。使用在 2019 年 4 月以色列选举前后进行的两次小组调查（N  = 1427；N = 912)，我们研究了一些关于未定公民的人口背景、他们在竞选期间如何搜索政治信息、他们如何做出最终决定以及他们是否最终投票的差异的假设。研究结果表明，典型的成熟的未定选民是来自更特权社会背景的公民，对传统媒体表现出更大的信任，消费更多的新闻来关注竞选活动（来自各种传统新闻媒体和社交媒体），更有可能进行关于选举的在线讨论，更有可能将他或她的决定基于政策问题，更有可能在同一意识形态阵营内的政党之间进行辩论（内部浮动），并且比不太成熟的未决定选民更有可能投票。我们的类型学，