Tunisians vote in historic presidential run-off

TUNIS (Reuters) - Tunisians voted on Sunday in a presidential run-off election that completes the country's transition to full democracy nearly four years after an uprising which ousted autocrat Zine El-Abidine Ben Ali. With a new progressive constitution and a full parliament elected in October, Tunisia is hailed as an example of democratic change for a region still struggling with the aftermath of the 2011 Arab Spring revolts. The North African nation avoided the bitter post-revolt divis