Can I force the visitors in my site to login if they want to vote?

Hello, I am trying to add voting contest to my guest post blog.

I want to give Amazon gift cards to 5 voters each month, for the post that has won.

What I need is:
1. Force the visitors to login if they want to vote for posts (preferably with an option for social login but if not possible – email/password but with email verification before login).
2. Collect the emails ONLY for the users that have voted for specific post.
3. Make users vote for only 1 post per category and only once, and remove their vote of the initial post if they vote for another.

In other words, when the month ends and we have a winning post, I want to export all the emails that have voted on that post and draw 5 random winners.

Is this possible without custom work?

Also, I don’t mind buying the PRO plugin if its not possible with the free but it is possible with the PRO.

Thanks!

• This topic was modified 12 months ago by snipsnip.
• This topic was modified 12 months ago by snipsnip.
• This topic was modified 12 months ago by snipsnip.