"One vote, one bit."
Seats/votes asymmetry Packing/cracking asymmetry Voting power asymmetry

Online Gerrymander calculator (Packing/cracking asymmetry)

Enter the by district vote counts below and hit submit to calculate the amount and direction of gerrymandering.

To see how the numbers are calculated click: view source.

For an explanation of the reasoning behind the measure, read this blog post.

Enter district votes (one line per district):
Democratic votes Republican votes