The Telegraph has a neat flash-based dynamic political map to track the next British General Election. All of Britain is covered in color-coded hexagons that give you a quick at-a-glance view of which party has the lead for specific constituencies. Users find their area via postcode or by name from a pull-down menu.
There’s an interactive “Swingometer” that keeps track of the seats that would change hands between all the various political parties, allowing you to track “conservative vs. liberal democrat” or “labour vs. conservative,” etc. The interface also ties into the most recent political polls.
This isn’t the Telegraph‘s first map-based interface. There’s also a family activity planner that allows you to look up activities (exhibitions, festivals, sport, theatre, gardens, music, etc.) with a map-based interface. While the initial screen is a flash-based interface, your searches link to a Google Maps-based mashup that details the events with pushpins on the map.