No provision of open ballot in constitution, says Rabbani Says bill to amend Article 226 pending in Senate Senator Raza Rabbani. ISLAMABAD: Former Senate chairman Raza Rabbani on Monday argued in the Supreme Court that there was no provision in the Constitution for holding elections in the upper house through open ballot. The PPP lawmaker made these remarks as a five-member larger bench led by chief justice heard the presidential reference seeking the apex court’s opinion on introducing open ballot mode in the upcoming Senate elections. During the course of proceedings, Rabbani maintained that the bill to amend Article 226 was pending in the Senate.