Please don't vote for PML N!
The problem, I believe, is the parliamentary democracy system in its current implementation in Pakistan.
Votes are swayed by feudal pressure, cash hand-outs and even just meals.
A person like IK, who seemed like an uncompromising idealist at first, had to realize that he needs "electables" --- that's where things get fishy. That's when the initial group of people who believed in PTI's founding principles were sidelined for more familiar faces, who were either very wealthy or politically prominent (Aleem Khan, JT, etc.). At that point, PTI stopped being that "different" from the other parties. I still believe it is overall less corrupt and more competent than the rest, but one would have hoped that the difference would have been starker. PTI lost the moral high ground when it inducted people of dubious wealth into its highest ranks, sidelining most founding members who had stood by IK when he was a political nobody.
Pakistan does not need a marginal improvement. The need of the hour is a massive and radical reformation of most State institutions, an upgradation of the Constitution, a heavily technocrat-based govt, etc.