Can someone from Maine confirm this?
Since the Electoral College allocates each states votes (except Maine and Nebraska) in a winner-take-all method, there is no reason for a candidate to campaign in a state that already favors them or their opponent.
http://216.239.41.104/search?q=cache:Too4I7tqBP8J:www.fairvote.org/e_college/problems.htm+electoral+vote+winner+take+all+maine&hl=en
Maine went 4-0 in 2000, but it was very close. Maine often goes 3-1.