The current constitution of Kyrgyzstan was passed by referendum on June 27, 2010, replacing the previous constitution. The document introduces a strong parliament to the country, which reduces the power of the historically strong president. The constitution is similar in many ways to the previous. The referendum passed with 90% of the votes and 70% voter turnout, despite 400,000 people, mostly ethnic Uzbeks, having fled ethnic violence in the south of the country who had still not returned. This replaced the older constitution.