The Harbus student newspaper survey, conducted last week, indicates the Republican presidential nominee would lose to Obama 45 percent to 26 percent among students who are eligible U.S. voters.
Some 299 students eligible to vote Tuesday said they'd vote for Obama, compared with 174 who said they'd vote for Romney, the online, unscientific political survey indicated.
Among the total 668 students who responded -- including those from other countries, who can't vote in the presidential election -- Obama won 65 percent support, or 430 students, and Romney captured 32 percent, or 211 students, the newspaper said.
The remaining queried students said they supported a third-party candidate, were still undecided or didn't plan to vote, the Harbus said.
By contrast, a United Press International poll released Friday indicated Obama and Romney were tied at 48 percent among likely voters. The results of the UPI-CVoter poll marked the third straight day the two candidates were tied nationally as Election Day approaches.
For the Harbus poll, the newspaper queried first- and second-year HBS students by email and through Facebook and used private Qualtrics online data-collection software to compile and analyze the results, Co-editor-in-Chief Kate Lewis told UPI Friday.
The number of respondents represents about a third of the two-year graduate school's 1,818 students.
Romney received a joint master of business administration and law degree from Harvard in 1975. He was named a Baker Scholar, the business school's top honor, for graduating in the top 5 percent of his class.
Romney was also governor of Massachusetts, where Harvard is located, and co-founded Boston's Bain Capital private-equity firm, which often hires Harvard B-school graduates.
Obama is a 1991 graduate of Harvard Law School, where he was president of the Harvard Law Review.
"In a sense, Romney is everything that an HBS grad wants to be: He's a successful businessman, he's made a lot of money, he's made a great name for himself," Lewis told UPI.
"I also think people's political views are formed early in life, and your political views aren't going to change just because you go to the alma mater of one of the presidential candidates," she said.
Lewis added Romney was widely admired on campus for his business acumen, and Bain Capital "gets some of the smartest kids on campus."