LAHORE - Former prime minister Nawaz Sharif has directed the party leaders to ensure their presence at Returning Officers offices in order to save votes. While issuing directives, he asked leaders and workers to remain vigilant on by-elections day and record a forceful protest if they see any wrongdoing on election day. According to reports, PML-N leader Hamza Shehbaz was likely to visit ROs’ offices and different polling stations.