Albanian lawmakers have adopted constitutional reforms expanding the use of proportional representation in parliamentary elections.

The changes, approved late Monday, require that elections in all 12 of the country's administrative regions be conducted on a proportional-representation basis. The vote followed agreement between the ruling Democratic Party and the opposition socialists on the changes.

Representatives of smaller political parties strongly opposed the amendments, contending that the reforms will deprive them of seats in parliament.

The reforms also allow the election of the country's president by a majority vote in the fourth round of balloting, instead of the previously-required three-fifths vote

The legislation sets the term of office for the state prosecutor, previously unlimited, to five years. It also requires the dissolution of parliament and new elections if the government loses a parliamentary vote of confidence.

Some information for this report was provided by AFP and AP.