A popular uprising occurred between 1994 and 2000 in which leftists, liberals and Islamists joined forces. The event resulted in approximately forty deaths and ended after Hamad bin Isa Al Khalifa became the Emir of Bahrain in 1999. He instituted elections for parliament, gave women the right to vote, and released all political prisoners. A referendum on 14–15 February 2001 massively supported the National Action Charter. As part of the adoption of the National Action Charter on 14 February 2002, Bahrain changed its formal name from the State (''dawla'') of Bahrain to the Kingdom of Bahrain. At the same time, the title of the Head of State, Hamad bin Isa al-Khalifa, was changed from Emir to King.