The broad leftist coalition that banded together to beat back the French far-right is struggling to pick a candidate for prime minister. The multi-party New Popular Front (NFP) alliance, which was the surprise winner of Sunday’s snap parliamentary elections, consists primarily of the Socialists, the Greens, the Communists and firebrand Jean-Luc Mélenchon’s hard-left France Unbowed. At an overnight meeting between the Socialists and France Unbowed, no agreement was reached, broadcaster France Info reported on Wednesday, as both parties vie for supremacy in the alliance. The Socialists see their…