I am sure you guys are sick to death of post-mortem pieces on Maine from me, but I promise just this one more, since I think there are some implications for all campaigns re field operations.
Jasmine Beach-Ferrara, who volunteered in Maine for the No On 1 campaign, has a piece in The Democratic Strategist about the field campaign in Maine. You can read the entire thing here, but there are a few nits I want to pick and two interesting ideas in it, particularly if you're a field geek.