vote with one's feet

verb1

1. •
   To express one's preferences through one's actions, by voluntarily participating in or withdrawing from an activity, group, or process; especially, by physical migration to leave a situation one does not like, or to move to a situation one regards as more beneficial.

   • That would enable the students to "vote with their feet" for programs of proven excellence and presumably for fields where the most jobs are available. — 1973