The Vote it up plugin is nice but once you vote something you can't undo.
Is there a voting plugin which is similar to the one you find here at StackExchange?
(You can undo your vote and vote down).
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Yes! Check out CubePoints.
Is a point management system designed for WordPress blogs.
Users can earn points by posting comments creating posts, or even by logging in on your site. Also your users can be awarded with ranks automatically when they reach certain points as well.
I've used GD Star Rating; it's similar to Vote It Up. It allows you to add thumbs up/down and/or star ratings to posts, pages, comments, etc.
Its major drawback is the complex setup and options.
Yes, There is a Wordpress voting plugin. Please Visit http://plugins.ohiowebtech.com/downloads/wordpress-voting-photo-contest-plugin/ for details