Le Pen, Melenchon head for run-off as France's political divide deepens, poll shows

French far-right leader Marine Le ​Pen and hard-left rival Jean-Luc ​Melenchon widened their lead over ‌other candidates ​and would face each other in a run-off in all tested scenarios, a poll showed ‌on Monday, stressing growing polarisation as President Emmanuel Macron's era ends.