The referendum was called by conservative group In the Name of the Family after Croatia's centre-left government drafted a law to let gay couples register as "life partners".
The Catholic church's leaders have urged their followers to vote "yes" in the referendum. Nearly 90% of Croatians are Roman Catholics....
Croatia's liberal president Ivo Josipovic said he would vote against amending the constitution.
"We don't need this kind of a referendum," Josipovic said. "Defining marriage between a man and a woman doesn't belong to the constitution. A nation is judged by its attitude toward minorities."
December 2, 2013
"I will vote against because I think that the referendum is not a festival of democracy, but a festival of oppression against a minority..."
... said one Croation who voted "no" on the question "Do you agree that marriage is matrimony between a man and a woman?" But 65% of Croatians voted yes on the referendum.