That was an indication authorities were illegally using administrative resources to get out the vote, she said.
The measure parallels related legislation making its way through parliament that toughens punishments for promoting “a homosexual way of life” and “nontraditional sexual relations.” The bill passed a first reading in parliament but has not been given final approval.
Some gay rights and feminist groups are known in the capital, Bishkek, and active on social networks, and there are several gay and lesbian cafes and bars in the city, as well.
The most controversial proposal that Kyrgyz were voting on, however, was a proposal to strengthen the authority of the prime minister while weakening the president.
Those proposed changes have fueled long-standing suspicion among some in Kyrgyzstan that the referendum is designed to give President Almazbek Atambaev a way to stay in power -- or at least maintain influence -- after his seven-year term ends following an election next fall.
Kyrgyzstan is the only country in Central Asia with a single-term presidency.
Atambaev, 60, has said publicly that he will not seek political office, including the post of the prime minister, after his presidential term ends. But some Kyrgyz political analysts believe that he may intend to continue playing a powerful role behind the scenes.
Former lawmaker Bakyt Beshimov says that it would be "suicidal" for a "a president whose term is ending not to think about the future of his political legacy."
Atambaev's Social Democratic Party leads the ruling coalition in parliament, the 120-seat Jogorku Kenesh.
Kyrgyzstan has adopted a new constitution three times since it gained independence in the 1991 collapse of the Soviet Union.
The first post-Soviet constitution was introduced in 1993 and the second was passed by referendum in 2007.
The current constitution, approved by referendum in June 2010, formally changed the country’s political system, giving more authority to parliament and limiting the power of the president.