Prodi will face the Senate this evening. In his speech yesterday he underlined the priority of the electoral law, which was modified by Berlusconi just before the elections last year.
If that is the priority, then Prodi clearly believes that his government (if the senate approves) will not last very long.
I believe that neither Prodi nor Berlusconi should run in case we had elections soon. They are both old and compromised. They are clearly unable to bring together a sensible coalition. Prodi's case is clear now, but Berlusconi's coalition is in pieces as well. Notably, the centre right party (UDC- Christian Democrats), does not want to accept B's leadership anymore.