HÉNIN-BEAUMONT, France — It was a moment of intense French patriotism on a sunny Friday, Armistice Day. A band blared “La Marseillaise,” the national anthem. Shouts of “Vive la France!” filled the chilly November air. And there, too, was Marine Le Pen, leader of the far-right National Front party, beaming.
Before Donald J. Trump’s presidential victory in the United States this week, Ms. Le Pen was considered a disruptive political force but far from a true threat to become president herself when France votes next spring. Not anymore.