We built a google map tool to define digital/GIS boundaries of different regions, to show them on google map. That tool helped adding polling stations or other POIs in a geographical area. Using our tool, one can edit the boundaries as well. We used that tool to draw various boundaries, but two of them are mentioned here.
1. Our tool was used to draw boundaries of counties of Sweden. Some data was also added to show different statistics in those counties with heat-map.
1. Our tool was also used to define constituencies delimitation. Main polling stations and candidates were also added.