Eighteen opposition parties, including the JD-U, are expected to meet in New Delhi on July 11 and evolve a strategy for the upcoming vice presidential election, sources said today.'<br/><br/>According to PTI, the meeting convened by Congress president Sonia Gandhi in the Parliament library, will be attended by Congress vice president Rahul Gandhi and leaders of the other opposition parties. The parties will also discuss floor management for the monsoon session of Parliament, which starts on July 17.<br/><br/>The process of filing of nominations for the vice presidential poll started on July 4 and will end on July 18.The government and the opposition has so far not taken any names of possible candidates for the post.<br/>'<br/>''''<br/>