Operating under a new electoral law written unilaterally by the governing parties with strong criticism from the parliamentary opposition, the April 2006 general election was held. The results of this election handed Romano Prodi's centre-left coalition, known as The Union, (Berlusconi's opposition) a very thin majority: 49.8% against 49.7% for the centre-right coalition House of Freedoms in the Lower House, and a two-senator lead in the Senate (158 senators for The Union and 156 for the House of Freedoms).