Add Rails-Voter gem to your Gemfile:

Current version  
gem 'rails_voter', github: 'SunnyRails/rails_voter'  

RubyGems version (0.2.1)
gem 'rails_voter'  

Run bundle install

Use the install generator to set up Rails-Voter:

rails g rails_voter:install

Run bundle update rails_voter

Use the update generator to set up Rails-Voter:

rails g rails_voter:update

http://localhost:3000/rails_voter/

To insert a ballot form or display the voting result use helpers.

erb:

<%= embed_ballot_form(<< Election Id >>) %>
<%= embed_voting_result(<< Election Id >>) %>

haml:

= embed_ballot_form(<< Election Id >>)
= embed_voting_result(<< Election Id >>)

This project rocks and uses MIT-LICENSE.