Why did Maine vote for Hubert Humphrey?

[soniquemd21921]

In 1968 Nixon received 53% of the vote in Vermont and 52% in New Hampshire, but Maine gave Humphrey 55% of the vote! Then, four years later, Nixon won 64% in New Hampshire, 63% in Vermont and 61% of in Maine - which means all three states voted about the same.

What was up with 1968? I'm guessing it had to do with the fact that Edmund Muskie was the vice presidential candidate, and he was extremely popular here.

[soniquemd21921]

I used to think the "home state" effect only really applied to presidents, but I guess it can apply to vice presidential picks as well - e.g. Jimmy Carter carrying Minnesota twice because of VP Walter Mondale.