Jacopo Barigazzi, co-founder of Linkiesta, says that it is the "beginning of the end" for Silvio Berlusconi, but he could still be popular with voters.
Silvio Berlusconi is renowned for his off-color remarks and personal scandal.
Antonio Garcia Pascual, chief euro area economist at Barclays, talks about Italy's key issues including structural reforms and how Wednesday's confidence vote could impact them.
Annalisa Piazza, senior economist at Newedge, comments on the political turmoil in Italy, where up to 20 senators from Berlusconi's PDL party could resign.
Artur Fischer, co-CEO of Borse Berlin, discusses Italy and highlights that center-right Silvio Berlusconi has always been full of surprises and could have some more "weapons" up his sleeve.
All five members from Silvio Berlusconi's party announced their resignation on Saturday, plunging the country back into political uncertainty, reports CNBC's Michelle Caruso-Cabrera.
Federico Santi, Italy associate at Eurasia, discusses the political situation in Italy where early elections are still "the most likely outcome" and highlights the "defections" from Berlusconi's PDL party.
Francesco Giavazzi, professor of economics at Bocconi University, compares the confidence vote for Italian prime minister Enrico Letta to when members of the fascist party voted against Mussolini and fascism.
Just as you thought the crisis in Europe was over and markets seem to be enjoying confidence and stability, along comes another curve ball.
Wolfango Piccoli, managing director at Teneo Intelligence, tells CNBC that Silvio Berlusconi is posturing and is aware how precarious Italy's economic situation is.
Silvio Berlusconi vowed on Wednesday to remain at the center of Italian politics even if expelled from parliament because of a tax fraud conviction.
Arrigo Berni, CEO of Moleskine, discusses the political situation in Italy, and says events at a global or European level have more impact on Italians than domestic events do.
CNBC's Simon Hobbs reports on all the market moving events in Europe today, as Italian markets post gains amid uncertainty over Berlusconi's political future.
Guy Foster, group strategist at Brewin Dolphin, discusses the political situation in Italy, and explains how it's no longer such a destabilising factor for the market.
Mario Monti, Italy's former prime minister, expects Berlusconi's party to remain in the coalition even if Berlusconi is forced to leave and discusses the current government and what it now needs to do.
European shares closed lower on Monday, as investors remained unease over when U.S. Federal Reserve might start scaling back its stimulus program.
Silvio Berlusconi has said he still supports Italy's coalition government, saying it must continue. Julia Chatterley has more from Milan.
Marco Giordani, CFO of Mediaset, tells CNBC that advertising sales have turned around in July after 21 months of decline.
Marco Giordani, CFO of Mediaset, tells CNBC that the relationship between Mediaset and Berlusconi is a normal one between company and shareholder.
A top executive for the media company at the center of Silvio Berlusconi's tax fraud conviction said the billionaire politician did not play any role in running the company he founded.