Earlier this week, Maine Republicans floated a redistricting map, which would radically change the orientation of Maine's two Congressional Districts.
The Republican plan is on the left, and you can see in a thick line underneath the old map. The Democratic plan is standpat.
Working out the PVI for each district is relatively simple, as news reports suggest they plan to split only one county - Franklin. Franklin County is the second-smallest in terms of population in the state. Thus, even though I can't seem to find results by town or precinct, the fudge factor I applied, putting two-thirds of the votes into CD1, and 1/3 into CD2, is probably fine.
So, what did I find? The breakdown is as follows.
ME-1 - Obama's % of two-party vote 62.13%. PVI D+8 (Obama only)
ME-2 - Obama's % of two-party vote 55.58%. PVI D+2 (Obama only)
At first glance, this looks pretty bad for ME-2. However, in terms of actual 2008 presidential election results, Obama got 61.62% of the two-party vote in ME-1, and 55.75% in CD2. Thus, the first district only gets 0.51% more Democratic, while the second district only gets 0.17% less Democratic.
In terms of actual PVI, D+2 is lower than the reported D+3 for the district under Cook's PVI, but this has to do with Kerry performing marginally better, adjusted for his national vote totals, than Obama did. For example, despite getting 4.6% more than Kerry nationwide, Obama only did 2.7% better than him in the existing ME-2, meaning the district has, in proportion to the country, slightly shifted to the right since 2004.
Regardless, the bottom line is in terms of partisanship, this map is standpat. The reconfigured ME-2 might be intended to make the swingy district more open to a particular candidate the Republicans have in mind, however.
As a final aside, when this was diaried on the front page, it was wrongly claimed that Republicans have total control on the issue. Redistricting plans must be passed with a 2/3rds majority in Maine, so although this plan is probably close to the final map, it wouldn't be surprising if some compromises were made (probably on the legislative level) in order to swing some Democratic votes.