The balance sheet on three big-ticket issues

* PTI is the only party among the top three that has approached environment as part of a cross-sectoral and multi-dimensional green growth agenda
* Only the PPP has specifically mentioned sanitation services and has promised to extend these facilities to un-regularised slums
* Despite its harmful effects on the environment, coal power has figured prominently in the manifestos of the three major parties
* The July 25 election in the first in the country's history when party manifestos discuss the question of water shortage in separate sections