Paris attack keeping candidates cautious

50,000 police officers, soldiers mobilized ahead of Sunday's vote

PARIS - France began picking itself up on Friday from another shooting claimed by the Islamic State group, with President Francois Hollande calling together the government's security council while his would-be successors in the presidential election campaign tread carefully heading into the weekend vote.

One of the key questions was if, and how, the attack that killed one police officer and wounded three other people might impact voting intentions.