Howard Rudy, a retired LDS businessman in Salt Lake City and a Romney backer, was disappointed.
The Republican nominee, Rudy said, is "the kind of character that Americans just don't understand. He could have turned things around."
Despite the outcome, Mormonism came out a winner, said Philip Barlow, chair of Mormon history and culture at Utah State University.
"It developed a thicker skin in the eyes of the world," Barlow said, "and the world could see that a Mormon who runs for office isn't, by definition, a nut case."
Overall, most observers say, the Romney candidacy was a net positive for his Utah-based faith.
"For us, this has really been an opportunity to really depict who we are," LDS spokesman Michael Otterson told The Washington Post. "The opportunity to set aside some of the long-standing misunderstandings, more misunderstandings and lack of education than prejudice."
Romney's bid did focus attention on Mormonism, which helped bring The Church of Jesus Christ of Latter-day Saints into the mainstream of American religion, says Jan Shipps, a Methodist and a leading expert on LDS history.
But being better known "may not be entirely positive, just different," she said. "Once a church loses its minority status, it may not be as protected as it once was."
The Mormon factor might have become more difficult, Shipps said, under a President Romney.
"During a campaign, he can blame his advisers for his lies or misrepresentations," she said, "but once he's in the White House, he'd become more responsible for everything he says and does than any candidate."
The campaign may have educated more Americans about Mormonism, but it didn't change overall attitudes , said David Campbell, an LDS political scientist at the University of Notre Dame. Perceptions of Latter-day Saints are "not driven by politics or by news coverage of Mormons. It is driven by personal relationships with Mormons."
Still, Romney's run did alter some views: He won nearly the entire Bible Belt, dominated by evangelical Christians who long have been suspicious of Mormonism and critical of LDS theology.
"Right now, attitudes toward Mormons are sharply divided along partisan lines," Campbell said. If Romney were president, those partisan views could be "baked into the American political psyche ... [which would be] unhealthy for Mormons as a group, for religious tolerance, and for the Republican and Democratic parties."
Romney's loss "may be a blessing for Mormons concerned about further public scrutiny of their faith," said Utah Valley University administrator Brian Birch. "A Romney presidency would almost certainly have kept Mormonism under the microscope for many years to come."
Matthew Jorgensen, an LDS scholar on a research fellowship in Germany, worried that a Mormon president would have put his fellow believers, including missionaries, at risk across the globe.
"If Mitt Romney [offended] radical Islam," he wrote in an email, "then Mormons all over the world could become the target of terrorism in response to some offhand comment."
The LDS Church's governing First Presidency and Quorum of Twelve Apostles issued a statement late Tuesday congratulating President Barack Obama and commending Mitt Romney for "engaging at the highest level of our democratic process which, by its nature, demands so much of those who offer themselves for public service."
"This is now a time for Americans to come together," the statement said. "It is a long tradition among Latter-day Saints to pray for our national leaders in our personal prayers and in our congregations. We invite Americans everywhere, whatever their political persuasion, to pray for the president, for his administration and the new Congress as they lead us through difficult and turbulent times."