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In 2010, ten parties won seats in the Belgian Senate: Christen-Democratisch en Vlaams (CD&V), Centre Démocrate Humaniste (CDH), Socialistische Partij Anders (sp.a), Parti Socialiste (PS), Open Vld, Mouvement Réformateur (MR), Groen, Ecolo, New Flemish Alliance (N-VA) and Vlaams Belang.
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Voters who live in the provinces of Antwerp, East Flanders, Flemish Brabant, Limburg or West Flanders can only vote for CD&V, Groen, N-VA, Open Vld and Vlaams Belang, apart from the minor parties – except when a French-speaking party would present a list in one of these provinces, which has not happened yet.
The agreement was made among the Christian-democratic CD&V and cdH, socialist sp.a and PS, liberal Open Vld and MR and ecologist Groen! and Ecolo, each respectively a Flemish and French-speaking party.
On 26 October 2009, he became a candidate for the presidency of his political party Open VLD to succeed the transitional president Guy Verhofstadt.
Like Jean Sarkozy, criticism has been levied over the perceived nepotism which led to his appointment at the age of 27 as the head of the electoral list for the Open VLD party in the 2007 federal elections for the province of East Flanders despite his lack of any relevant work experience.