Hi @Amy Zheng Welcome to the Atlassian Community!
If you are familiar with REST APIs then you can write a script to loop through all the pages in your space and then make a GET request to get the names of the people who has liked that page eg: below endpoint will give you user name who has liked a particular page
https://yourdomain.atlassian.net/wiki/rest/likes/1.0/content/{contentID}/likes
After this, you would need to do several API calls, eg: one to get the list of users, and compare it to the user ID of the vote. For further details on using the REST API, have a look at Confluence Cloud REST API Documentation.
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