If PTI goes into any sort of an anti-corruption alliance with PPP, about 50% of PTI will jump ship. So they will have to tread very carefully. Dealing with PPP means dealing with Zardari, and any hint of that could very well be the demise of PTI. And that is exactly what PPP is trying to do. I would be very surprised if PTI tags along with PPPs 4 demand drama, knowing well that PPP did not support PTI's protests in any way.