The campaign, entitled “Basta!” or “Enough!” is being coordinated by the L'Unita newspaper, which is close to Italy's center-left opposition. It was announced Thursday as criticism mounted against the premier over a prostitute scandal, including from the Catholic Church.

Prosecutors have placed Berlusconi and three associates under investigation, alleging he paid for sex with a 17-year-old girl and used his office to cover it up.

Berlusconi has gone on a media blitz to refute the accusations and denounce the prosecutors. The teen has said they never had sex.