Clicking the five stars to upvote an idea is NOT intuitive on canvas community. A lot of new users go directly to the comments section to beg for a feature without even noticing that they could upvote it! There needs to be a 100% CLEAR call to action here if you want any validity in your decisions to work on certain feature requests based on the number of votes. 

Look at this example: Only 9 votes and 127 comments...