France Shaken by National Front 'Earthquake'

PARIS—The political fallout from the National Front's unprecedented victory in European Parliament elections rained down on President François Hollande on Monday and sparked a rare bout of soul-searching within the country's ruling elite.

French newspapers brimmed with apocalyptic headlines and photos of Marine Le Pen, leader of the far-right party, grinning as she celebrated the party's historic triumph at the polls....