Albania is governed under the constitution of 1998 as amended. The president, who is the head of state, is elected by the legislature for a five-year term and is eligible for a second term. The government is headed by the prime minister. The legislature, the unicameral Parliament, or Assembly ( Kuvendi ), has 140 members, elected (since 2009) proportionally on a regional basis; they all serve four-year terms. Administratively, Albania is divided into 12 regions or counties.