Napolitano was appointed a Senator for Life in 2005 by President Carlo Azeglio Ciampi. In May 2006, he was elected by Parliament as President of Italy. During his first term of office, he oversaw governments both of the centre-left, led by Prodi, and the centre-right, led by Silvio Berlusconi. In November 2011, Berlusconi resigned as Prime Minister amid financial and economic problems. Napolitano, in keeping with his constitutional role, then asked former EU commissioner Mario Monti to form a cabinet which was referred to as a "government of the president" by critics.