Today at Down East, I post some maps I've been working on and outline some state senate districts that I'll be addressing in greater detail soon.
Here's a map of the '06 state senate election:
The colors are determined by comparing the percentage of the total number of votes (including votes for third-party and independent candidates) of both the Democrat and Republican in the race.
For example, Democrat Ethan Strimling received 8824 votes in District 8, or around 67 percent of the total. Republican David Babin received 2433 votes, or a bit more than 18 percent, and Kelsey Perchinski of the Green Independent party won 1895 votes, a bit more than 14 percent.
Subtracting Babin's percentage from Strimling's gives an almost 49 point margin of victory. The district is then shaded the darkest blue, which connotes districts where the Democrat won by more than 20 points.