Maine & Obama
First, Clinton has the support of Maine’s governor (and former 2nd district congressman) John Baldacci; the Clintons also have a longstanding relationship with the state’s last Democratic senator, George Mitchell. Obama has received the endorsement of the state’s largest paper, the Portland Press-Herald, but the party leadership is clearly behind Clinton.
Second, Maine has a long tradition of electing women to statewide offices. It sent Margaret Chase Smith to the Senate for four terms; from 1949 through 1973, she was the upper chamber’s sole female member. Today, Maine is one of three states (alongside Washington and California) to have two female senators.
Third, Maine is one of the whitest (97 percent) states in the country. Asian-Americans (who backed Clinton over Obama in California) are its largest minority group (only 0.9 percent of the total population is Asian). The state’s minorities do not have a record of political activism.
Fourth, Maine’s white Democrats are disproportionately ethnic and working-class—demographic groups critical to Clinton’s triumphs in New Jersey and Massachusetts. They’ve tended to dominate Democratic primaries, as well. In 1996, former governor and congressman Joe Brennan ran for the Senate—fresh off not one but two losing campaigns for governor (1990 and 1994). It was clear that he had no chance of victory if he were nominated, but he prevailed anyway, thanks to overwhelming backing from older voters and French-American voters in the Lewiston-Auburn area. (Brennan then lost in the fall to Susan Collins.) Six years later, the reformist state senator who had lost to Brennan, Sean Faircloth, ran for the seat vacated by Baldacci; despite attracting the endorsement of the 2nd district’s most famous resident, Stephen King, Faircloth lost the primary to Mike Michaud, a pro-life Democrat and former millworker. Michaud endorsed John Edwards for President; he hasn’t made a new endorsement. (The state’s other congressman, Tom Allen, is running for the Senate, and has said he will remain neutral in the primary.)
Fifth, Maine has a small student population. Students at its three elite liberal arts colleges (Bates, Bowdoin, and Colby) are overwhelmingly from out of state. The main branch of the University of Maine is in Orono—more than two hours away from the state’s population center on the southern coast. The satellite UM branches don’t have a record of political activism. Obama, in short, can’t rely on a surge of student support.
As far as I can tell, the assumption that Obama will carry Maine seems to be based solely on the state’s caucus structure. The Illinois senator has, of course, done exceptionally well this year in caucuses, a format recently denounced by Hillary Clinton as undemocratic. (It's not clear whether Clinton previously devoted any time in her 35 years working on behalf of change to eliminating the scourge of caucuses.) The caucus structure might be enough for Obama to win. But the suggestion that Maine is a natural place for him to run well seems to me a bit far-fetched.