Under the 1962 Constitution of Monaco, the prince shares his veto power with the unicameral National Council. The 24 members of the National Council are elected for five-year terms; 16 are chosen through a majority electoral system and 8 by proportional representation. All legislation requires the approval of the National Council, which is dominated by the conservative Rally and Issues for Monaco (REM) party which holds 20 seats. Union Monégasque holds three seats while Renaissance holds one seat. The principality's city affairs are directed by the Communal Council, which consists of 14 elected members and is presided over by a mayor. Georges Marsan has been mayor since 2003. Unlike the National Council, communal councillors are elected for four-year terms and are strictly non-partisan; however, oppositions inside the council frequently form.