How can I limit the number of response, I want that one person can vote only for one time?

How can I limit the number of responses, I want that one person can vote only for one time?

It is possible to limit the user to submit only once. You can use the Unique Question or Unique Submission feature.

Unique Question - This feature prevents multiple submission that has the same answer. For example, email address or phone number. The next user cannot enter the same phone number or same address.  Here's a guide: https://www.jotform.com/help/223-How-to-set-Form-Limits-Based-on-a-Unique-Question.

Unique Submissions - This feature will block multiple submissions from one browser or same IP address. Here's a guide: https://www.jotform.com/help/64-How-to-Set-Unique-Submissions-on-a-Form.

If you have any questions, let us know. Thank you.