Palestinian Municipal Elections

Palestinian municipal elections were held today, with Fatah holding onto a majority of the cities despite a strong challenge from Hamas. I haven't been following things that closely, but from what I've read most Hamas support came over people who were upset with Fatah's corruption and happy with Hamas's ability to provide services. Fatah's vote was probably helped by the perception of progress in making peace with Israel, progress which could be set back if Palestinians elected a bunch of militant rejectionists. One thing I do wonder is how Hamas will govern. Do they actually seek to impose Islamic law in territory under their control? And if so, how will people respond?