Cubans overwhelmingly approved a sweeping referendum that will allow same-sex couples to marry and adopt children, the national election commission said on Monday, a resounding victory for advocates of L.G.B.T.Q. rights in a country that once sent gay men to labor camps.
About 67 percent of voters, nearly 4 million, voted in favor, according to the Cuban government. About 33 percent, or 2 million people, opposed the measure.
President Miguel Díaz-Canel, the first non-Castro to lead the nation since its 1959 revolution, celebrated the passage of the 100-page referendum, saying in a statement that “love is now the law.”
Passing the law, he said, was a way to “pay a debt to various generations of Cubans whose domestic plans had been waiting years for this law.”
“As of today,” he added, “we will be a better nation.”
The 100-page referendum — which also expands protections for women, children and the elderly — had faced opposition from the Roman Catholic Church.
While the measure passed easily, it did not receive the near-total support typical of government-backed proposals in Cuba, where tallies often exceed 90 percent.
That opposition is rooted in a growing evangelical movement in Cuba, as well as an entrenched machismo tradition, said Alberto R. Coll, a law professor at DePaul University and an expert on U.S. relations with Cuba.
But the measure passed largely because of the belief among many residents that “these are matters that the law should not regulate strictly,” and its time was past overdue, Professor Coll said.
The law also allows for surrogate pregnancies, includes measures against gender violence and encourages couples to equally share the load with housework.
Other Latin American countries have taken similar steps in recent years to address gay rights. In 2020, Costa Rica legalized same-sex marriage, and in 2019, Ecuador’s Constitutional Court ruled that same-sex couples could marry.
Mr. Díaz-Canel and his government had openly supported passage of the referendum. But some critics of his have said that his support was a way for him to show a liberal face in the wake of mounting political and economic discontent on the island.
Officials have been dealing with the worst financial crisis to hit the country since the 1990s, coupled with demands for political and social changes. Last year, those factors propelled the island’s largest demonstrations in decades.
“This has been a way for him to say, ‘Look, you know, we’re not so repressive,’” Professor Coll said.
But even putting the law up to a vote — a rare step in the country — upset some L.G.B.T.Q. rights advocates.
Juan Pappier and Cristian González Cabrera, researchers at Human Rights Watch, wrote in a column that it was wrong for the Cuban government to engage in “the political pageantry of putting individual rights, including the right of gay and lesbian couples to be free from discrimination, to a popularity vote.”
They added that the “authorities are subjecting basic rights to a political football between advocates for equality and nondiscrimination and their opponents.”
Still, the law was a stark departure from the old attitudes that dominated the country. The Cuban government had once viewed homosexuality as a dangerous aberration. In the 1960s, Fidel Castro’s revolutionary government helped spread a wave of homophobia on the island when he packed gay men off to labor camps, a form of punishment and coercion to conform.
His niece, Mariela Castro, has been leading the charge for L.G.B.T.Q. rights in Cuba, as director of the National Center for Sex Education. She said that she was proud that the law had passed.
“Now,” she said, “love is law on the island of freedom.”