Pollr.us lets you vote on current issues and visualize how others vote on the same issues.
What it does
Tracks how users vote on issues and lets you visualize how the issues are voted on.
How I built it
The back-end is Flask and I'm using Mongolab for my database. First time using chart.js, which ended up being quite simple for my purposes.
Challenges I ran into
Spent a lot of time trying to decide what I wanted to do.