Suggestion: End poll after NN answers

Hi,

I would love to see a way to make a poll end after a given number of answers have been received. For example if people register to attend an event where there is a physical limitation on the number of people that can attend or be seated for example. I imagine this as a form setting that when checked expose a text box to enter the number of answers you want and perhaps a custom text to show people who attempt to reply after N answers have been received, and that the form checks number of replies on load, so that if answers have been deleted it will work again.