The Italian general election of 2006 took place on 10–11 April 2006.
The election was won in Sardinia by the centre-left The Union, which prevailed also nationally.
|-|- bgcolor="#E9E9E9"!rowspan="1" align="left" valign="top"|Coalitions leaders!rowspan="1" align="center" valign="top"|votes!rowspan="1" align="center" valign="top"|votes (%)!rowspan="1" align="center" valign="top"|seats!rowspan="1" align="left" valign="top"|Parties!rowspan="1" align="center" valign="top"|votes!rowspan="1" align="center" valign="top"|votes (%)!rowspan="1" align="center" valign="top"|seats|-!rowspan="8" align="left" valign="top"|Romano Prodi|rowspan="8" valign="top"|550,889|rowspan="8" valign="top"|52.5|rowspan="8" valign="top"|10|align="left"|The Olive Tree
|valign="top"|349,259|valign="top"|33.3|valign="top"|6|-|align="left"|Communist Refoundation Party|valign="top"|69,895|valign="top"|6.7|valign="top"|1|-|align="left"|Party of Italian Communists|valign="top"|34,200|valign="top"|3.3|valign="top"|1|-|align="left"|Rose in the Fist
|valign="top"|28,808|valign="top"|2.7|valign="top"|1|-|align="left"|Italy of Values|valign="top"|24,236|valign="top"|2.3|valign="top"|1|-|align="left"|Populars–UDEUR|valign="top"|23,827|valign="top"|2.3|valign="top"|-|-|align="left"|Federation of the Greens|valign="top"|13,552|valign="top"|1.3|valign="top"|-|-|align="left"|Pensioners' Party|valign="top"|7,115|valign="top"|0.7|valign="top"|-|-!rowspan="6" align="left" valign="top"|Silvio Berlusconi|rowspan="6" valign="top"|475,966|rowspan="6" valign="top"|45.4|rowspan="6" valign="top"|8|align="left"|Forza Italia|valign="top"|236,679|valign="top"|22.6|valign="top"|4|-|align="left"|National Alliance|valign="top"|135,247|valign="top"|12.9|valign="top"|2|-|align="left"|Union of Christian and Centre Democrats|valign="top"|80,877|valign="top"|7.7|valign="top"|2|-|align="left"|Social Alternative|valign="top"|7,828|valign="top"|0.7|valign="top"|-|-|align="left"|Christian Democracy–Socialist Party|valign="top"|6,246|valign="top"|0.6|valign="top"|-|-|align="left"|others|valign="top"|9,089|valign="top"|0.9|valign="top"|-|-!rowspan="1" align="left" valign="top"|Gavino Sale|rowspan="1" valign="top"|11,648|rowspan="1" valign="top"|1.1|rowspan="1" valign="top"|-|align="left"|Independence Republic of Sardinia|valign="top"|11,648|valign="top"|1.1|valign="top"|-|-!rowspan="1" align="left" valign="top"|Bastianu Cumpostu|rowspan="1" valign="top"|11,000|rowspan="1" valign="top"|1.1|rowspan="1" valign="top"|-|align="left"|Sardinia Nation|valign="top"|11,000|valign="top"|1.1|valign="top"|-|-|- bgcolor="#E9E9E9"!rowspan="1" align="left" valign="top"|Total coalitions!rowspan="1" align="right" valign="top"|1,049,503!rowspan="1" align="right" valign="top"|100.0!rowspan="1" align="right" valign="top"|18!rowspan="1" align="left" valign="top"|Total parties!rowspan="1" align="right" valign="top"|1,049,503!rowspan="1" align="right" valign="top"|100.0!rowspan="1" align="right" valign="top"|18|}Source: Ministry of the Interior
|-|- bgcolor="#E9E9E9"!rowspan="1" align="left" valign="top"|Coalitions leaders!rowspan="1" align="center" valign="top"|votes!rowspan="1" align="center" valign="top"|votes (%)!rowspan="1" align="center" valign="top"|seats!rowspan="1" align="left" valign="top"|Parties!rowspan="1" align="center" valign="top"|votes!rowspan="1" align="center" valign="top"|votes (%)!rowspan="1" align="center" valign="top"|seats|-!rowspan="8" align="left" valign="top"|Romano Prodi|rowspan="8" valign="top"|482,668|rowspan="8" valign="top"|50.9|rowspan="8" valign="top"|5|align="left"|Democrats of the Left|valign="top"|162,798|valign="top"|17.2|valign="top"|2|-|align="left"|Democracy is Freedom – The Daisy|valign="top"|119,084|valign="top"|12.6|valign="top"|1|-|align="left"|Communist Refoundation Party|valign="top"|77,870|valign="top"|8.2|valign="top"|1|-|align="left"|Together with the Union
|valign="top"|41,847|valign="top"|4.4|valign="top"|1|-|align="left"|Italy of Values|valign="top"|28,211|valign="top"|3.0|valign="top"|-|-|align="left"|Rose in the Fist
|valign="top"|23,545|valign="top"|2.5|valign="top"|-|-|align="left"|Populars–UDEUR|valign="top"|21,509|valign="top"|2.3|valign="top"|-|-|align="left"|Pensioners' Party|valign="top"|7,804|valign="top"|0.8|valign="top"|-|-!rowspan="6" align="left" valign="top"|Silvio Berlusconi|rowspan="6" valign="top"|429,731|rowspan="6" valign="top"|45.3|rowspan="6" valign="top"|4|align="left"|Forza Italia|valign="top"|215,516|valign="top"|22.7|valign="top"|2|-|align="left"|National Alliance|valign="top"|122,697|valign="top"|12.9|valign="top"|1|-|align="left"|Union of Christian and Centre Democrats|valign="top"|73,673|valign="top"|7.8|valign="top"|1|-|align="left"|Social Alternative|valign="top"|6,120|valign="top"|0.7|valign="top"|-|-|align="left"|Christian Democracy–Socialist Party|valign="top"|5,920|valign="top"|0.6|valign="top"|-|-|align="left"|others|valign="top"|5,805|valign="top"|0.6|valign="top"|-|-!rowspan="1" align="left" valign="top"|Antonio Delitalia|rowspan="1" valign="top"|16,733|rowspan="1" valign="top"|1.8|rowspan="1" valign="top"|-|align="left"|Sardinian Action Party|valign="top"|16,733|valign="top"|1.8|valign="top"|-|-!rowspan="1" align="left" valign="top"|Gavino Sale|rowspan="1" valign="top"|10,881|rowspan="1" valign="top"|1.2|rowspan="1" valign="top"|-|align="left"|Independence Republic of Sardinia|valign="top"|10,881|valign="top"|1.2|valign="top"|-|-!rowspan="1" align="left" valign="top"|Bastianu Cumpostu|rowspan="1" valign="top"|8,412|rowspan="1" valign="top"|0.9|rowspan="1" valign="top"|-|align="left"|Sardinia Nation|valign="top"|8,412|valign="top"|0.9|valign="top"|-|-|- bgcolor="#E9E9E9"!rowspan="1" align="left" valign="top"|Total coalitions!rowspan="1" align="right" valign="top"|948,425!rowspan="1" align="right" valign="top"|100.0!rowspan="1" align="right" valign="top"|9!rowspan="1" align="left" valign="top"|Total parties!rowspan="1" align="right" valign="top"|948,425!rowspan="1" align="right" valign="top"|100.0!rowspan="1" align="right" valign="top"|9|}Source: Ministry of the Interior