MANCHESTER, N.H., FEB. 14 -- The temperature never got above freezing in New Hampshire today, but a definite southern breeze blew over the Democratic campaigning here. Candidates began looking beyond Tuesday's primary to the Dixie-dominated "Super Tuesday" contest on March 8.

Massachusetts Gov. Michael S. Dukakis, expected to win New Hampshire handily, delivered a tough foreign policy speech designed to make his candidacy more palatable in Dixie. And Sen. Albert Gore Jr. (D-Tenn.) and Jesse L. Jackson, who have been all but absent from the state during the crucial final campaign week, toured its northern reaches -- battling each other and perhaps former Arizona governor Bruce Babbitt for a fourth-place finish on Tuesday.

Dukakis, Jackson and Gore are guaranteed to head South, where all three have established organizational beachheads; Sen. Paul Simon (D-Ill.) and Rep. Richard A. Gephardt (D-Mo.) are fighting for the right to join them.

The latest Washington Post-ABC News tracking poll, taken today of 403 likely Democratic voters, showed Gephardt and Simon in a virtual tie at 15 percent and 16 percent, respectively, while Dukakis cruised ahead with 41 percent. Gore was at 7 percent, Jackson at 8 percent, Babbitt at 6 percent and former senator Gary Hart of Colorado was at 5 percent. The figures have hardly moved all week.

A week after Dukakis told an Iowa audience that the Monroe Doctrine had been "superseded" by more recent treaties barring American intervention in Latin American nations, he took a markedly tougher tone towards hemispheric policy.

In a speech in which he used variants of the word "strength" 38 times in 25 minutes, Dukakis declared, "There is no room in this hemisphere for military bases from which the Soviet Union might project military force against ourselves, our allies or friends. And if Nicaragua or any other government in Central or South America seeks to overthrow or subvert its neighbors, we have the right and the responsibility to stop them."

Dukakis told reporters after the talks in a Derry Knights of Columbus Hall that instead of saying that the Monroe Doctrine -- the affirmation of America's readiness to resist European colonization in this hemisphere -- had been "superseded" by the Rio Treaty and the charter of the Organization of American States, "perhaps I should have said, 'expanded on.' "

He said that while the United States could use force to oppose the creation "of a satellite of any foreign nation" in this hemisphere, it was not justified in "using force to impose our will on others," as he said the Reagan administration is trying to do in Nicaragua.

Dukakis advisers had privately expressed apprehension that Gore might use Dukakis' apparent repudiation of the Monroe Doctrine against him in the South.

Neither Gore nor Jackson holds much hope of cracking into even the second Gephardt-Simon tier of finishers on Tuesday, but each is hoping to do better than expected to set the stage for the coming three-week battle in the South. Gore has only 18 people and Jackson 23 people working in New Hampshire, a fraction of the other candidates.

In a sense, the Super Tuesday battle began here Saturday when Gore joined Simon at a debate in assailing Gephardt. Gore also took offense at moderator Edwin Newman's intimation that he had abandoned his campaign here.

But his New Hampshire campaign manager acknowledges that, although Gore has spent $70,000 on his New Hampshire media campaign, winning here was never his goal.

"It's real good strength training for both the national organization and the field staff," said Richard Nicholson. All told, Gore will have spent about $400,000 on his campaign here, less than the $461,000 allowed by law.

Today's campaign schedules took Jackson and Gore to the less densely populated northern part of the state -- a chilly supper for Gore and a whistle-stop train ride for Jackson.