What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.

At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.

We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.

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    Allow users to only vote once in form?

    Asked by debbiepascaud on March 01, 2016 at 10:56 AM
    They can only vote for 1 photo and they leave their name and email with the vote (so they cannot vote twice).
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    JotForm Support

    Answered by Charlie on March 01, 2016 at 11:11 AM

    If you wish to limit your users to vote per unique email. That is possible by enabling your form limits.

    Here's a guide about it: 

    To limit submission per unique answer in your form fields (like your email field), then you can follow this guide: http://www.jotform.com/help/223-How-to-set-Form-Limits-Based-on-a-Unique-Question 

    To limit your submission per browser OR by unique IP, you can follow this one: http://www.jotform.com/help/64-How-to-Set-Unique-Submissions-on-a-Form 


    I hope that helps.