You can certainly use Constant for contest entries!
The feature you're looking for here would be our survey tool. Using this tool allows you to collect personal information (such as name, address, phone number, and more!) as well as allows you to ask a variety of other questions. You can click here to learn more on creating a survey. Let us know if you have any other additional questions, we're always happy to help.
Brigitte P Community & Social Media Support
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