sentences:  In what was considered an upset, the opposition United Democratic Party (UDP) won the election with 25 out of 31 seats; the ruling People's United Party won six.A national referendum had also been called to determine the views of Belizeans on an elected Senate.In August 2003 Cayo South Area Rep. Agripino Cawich of the PUP died, triggering a by-election in the constituency, only the second held in Belize since independence.