President Francois Hollande, once the most unpopular French leader in his country's modern history, is getting a major boost in popularity following his response to the terror attacks that shook the nation.

The Ifop-Fiducial poll released Monday for Paris Match magazine asked, "'Do you approve or disapprove of the actions of Francois Hollande as president?" Hollande's rating jumped an unprecedented 21 percentage points — from 19 percent in December to 40 percent after the three days of attacks that began Jan. 7 and left 20 people dead, including three gunmen. Fifty-nine percent still disapproved.

Approval of Prime Minister Manuel Valls rose to 61 percent in the same survey of 1,003 people by telephone. The margin of error was not reported.