Original sentence: However, from an 11-point lead, the PML-N's lead began to diminish in the final weeks of the campaign, with some polls close to the election showing PTI with a lead.Opinion polling prior to campaigning had initially shown leads for the Pakistan Muslim League (N) (PML-N) over the PTI
Edited sentence: From an 11-point lead, the PML-N's lead began to diminish in the final weeks of the campaign, with some polls close to the election showing PTI with a lead.Opinion polling prior to campaigning had consistently shown leads for the Pakistan Muslim League (N) (PML-N) over the PTI