Firstly, Omtzigt can choose not to participate in all electoral districts. Our country has been divided into 20 different electoral districts for the parliamentary elections. Traditionally, political parties submit the same list for each constituency, but this is not mandatory. You can also choose not to appear anywhere on the ballot. Then you have a smaller pond for fishing, but you still participate in the rest.
This is logically a no go for most parties. If you want to become the largest, all voters must be able to vote for you. For Omtzigt, on the other hand, that could work out well. Imagine: NSC will soon only participate in Overijssel. If eighty percent of the people vote there, and they all vote on Omtzigt, then it is estimated that the parliamentarian will only win a maximum of ten seats in the House of Representatives. This is how you keep growth under control.
New Social Contract could investigate in how many districts it has to participate in order to get enough votes for a modest number of seats in parliament, but not too many. This system is not watertight. Voters are unpredictable, and the lists must have already been submitted for the campaign. If Omtzigt fails to make an impression in debates or, for example, BBB is running a fantastic campaign, the pond from which the NSC can fish may suddenly be too small. Moreover, it immediately became apparent on Monday that many Omtzigt supporters are disappointed if they do not get the chance to vote for him in their constituency.