Electoral volatility is here to stay. One aspect of indicator of this electoral volatility at the individual level is the timing of the vote decision. A large minority of Dutch voters decides on their party choice in the week before Elections Day and about 15 percent even wait until this very last day. According to many politicians and political observers, these voters ‘decide’ the election. This paper will focus on this group of late deciding Dutch voters. Are these voters in terms of their sociodemographic profile different from voters who decide at an earlier date? Are they less informed and less knowledgeable, as is often assumed? Do they have different political attitudes and opinions, and how similar or different is the voting behavior of the late deciders compared to those voters that make up their electoral mind at an earlier stage?