^ Caliph can be chosen by the people OR caliph is chosen by the people?
I will answer what sayyidna umar b khattab said about this issue
"someone better than me ( abu bakr) choose a successor and someone better than him ( Rasoolallah) did not.So thats why I will not choose a successor".
AT any rate give me a leader that enforces shariah in all spheres of life ( not selectively like mr zia and his disastrous foreign policy of backing afghan bandits) and I will be happy no matter how he gets into power