If you're trying to make sense of the $2 billion being spent in anticipation of next Tuesday's election, here's a few nifty tools. Maplight.org and Wired have teamed up to create the Influence Tracker, which compiles the latest data on members of Congress' haul during this election cycle as well as their biggest donors. Nice touch: logos of each member's top corporate sponsors.
The Sunlight Foundation's Influence Explorer app creates similar snapshots of canddiates' war chests, but includes challengers who aren't currently members of Congress. Nice 20th-century touch: For $2, you can mail a copy of the data directly to friends and family in postcard form.