Silvio Berlusconi has been ordered to stand trial for the alleged bribery of Senator Sergio De Gregorio.
Former Italian PM Silvio Berlusconi is accused of paying left-wing Senator Sergio De Gregorio 3 million euros ($3.9 million) to defect to his right-wing People of Freedom party (PDL) in 2006 and help bring down the government.
Senator Sergio De Gregorio was sentenced in an earlier plea bargain.
Silvio Berlusconi has been embroiled in a number of trials and says he is the victim of a campaign by the judiciary.
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