This infographic is an interesting use and visualization of huge data sets. The interactive graphic shows the key donors to election platforms and how much their contributions are. The use of symbols proportioned to dollar value and coloured based on political affiliation is effective in highlighting important groups. Further, the animation and interactions create a smoother transition between states to facilitate perception of change. The application utilizes CartoDB (link) and Leaflet (link) to create the visualizations.
Link: http://graphics.wsj.com/political-moneyball/
