Ko Min

A plugin to site owner to add voting functionality to the blog posts. 
Using the power of the ajax, voter can have instant voting and update to top voted widget. 
It doesn’t matter voter is logged in or not. Public voting is done by tracking their IP address. 
It isn’t end here. Blog owner will have complete control over those voting feature as well as using custom 
vote button and vote text.
Features
<ol>
<li>Control voting feature via voting on/off (admin feature)</li>
<li>Control allow or disallow post author to vote his own posts (admin feature)</li>
<li>Control allow or disallow public voting (admin feature)</li>
<li>Customise vote and voted text (admin feature)</li>
<li>Customise vote and voted buttons images (admin feature)</li>
<li>Customise alert message for non logged in users (admin feature)</li>
<li>Voting logs for site administrator (admin feature)</li>
<li>Sort voting logs by vote count or voted date (admin feature)</li>
<li>Show current vote count and vote button on frontend templates</li>
<li>Compitible with almost all of the themes. You just need to call required function from your template</li>
<li>Total vote count widget</li>
<li>Top voted widget</li>
<li>Now public voting supported.</li>
<li>Now shortcode supported. e.g. [wpvoting]</li>
<li>Top voted posts list shortcode</li>
</ol>
Features in future releases
<ol>
<li>Export to CSV for admin voting logs</li>
<li>Registered user voting logs</li>
<li>Re-implement backend voting log list with WP_List_Table class</li>
</ol>
Note-1: Kindly please rate this plugin or vote the compatibility. So I could review it and improve the quality of this plugin. Appreciate your help!
Resources
http://www.garyc40.com/2010/03/5-tips-for-using-ajax-in-wordpress/
http://www.onextrapixel.com/2009/06/22/how-to-add-pagination-into-list-of-records-or-wordpress-plugin/
http://www.onextrapixel.com/2009/07/01/how-to-design-and-style-your-wordpress-plugin-admin-panel/
http://planetozh.com/blog/2009/09/top-10-most-common-coding-mistakes-in-wordpress-plugins/
https://wordpress.org/extend/plugins/vote-it-up/
https://wordpress.org/extend/plugins/shortcodes-ultimate/

WP Voting

Site owner to add voting functionality to the blog posts.

shauno

<h4>Features</h4>
<ul>
<li>Individually enable or disabled per image</li>
<li>Choose if registered and logged in users can vote</li>
<li>Allow a user to vote as often as they want, or just once per image</li>
<li>Show or hide the results from your users</li>
<li>Choose from 3 ratings types: 1-5 Stars, 1-10 Drop Down, or Like/Dislike</li>
</ul>
NGG Voting was inspired by a request from Troy Schlegel of Schlegel Photography. Please read the FAQ for more info on how it works.
If you want even more features and functionality, be sure to check out the <a href="http://codecanyon.net/item/nextgen-gallery-voting-premium/3307807?ref=shaunalberts" rel="nofollow ugc">Premium add-on</a>.
Please read the FAQ, as you are required to add a tag to gallery templates for certain functionality to work!
<h3>No Longer Supported</h3>
Please note: Due to some personal life circumstances, I was unable to provide the support level I wanted and this plugin stopped being updated awhile ago. 
Bringing this plugin up to date, and improving its usability are not feasible, so it will not be updated in the future.
<h4>New Replacement Plugin</h4>
I have released a replacement plugin that drastically simlifies the user experience, requiring no editing of templates, or code changes. 
I will be updating the new ratings plugin with features, and providing active support. Please check <a href="https://nextgen-gallery-ratings.shauno.co.za/" rel="nofollow ugc">it out here</a>.

NextGEN Gallery Voting

Adds the ability for users to vote and rate your NextGEN Images. Simple options give you the ability to limit who can vote on what.

WP Voting vs NextGEN Gallery Voting