Assessing congressional districting in Maine and New Hampshire

We use voting precinct and election data to analyze the political geography of New Hampshire and Maine. We find that the location of dividing line between Congressional districts in both states are significantly different than what we would expect, which we argue is likely due to incumbent gerrymandering. We also discuss the limitations of classical fairness measures for plans with only two districts.
Comment: 19 pages, 12 figures; comments and further research questions welcome