French President Emmanuel Macron's decision to call a snap national election after a surge for his far-right rivals is a high-stakes move and a huge political gamble, analysts say. Macron's decision to call a snap parliamentary vote comes after the right-wing National Rally (RN) party, with Marine Le Pen as the figurehead, won around 31% of the vote in Sunday's European Parliament election. That was more than double the 14.6% seen for Macron's pro-European and centrist Renaissance party and its allies. France's CAC 40 slumped 1.8% in early trading Monday morning with French banks trading sharply lower. BNP Paribas and Societe Generale led the Stoxx 600's losses, both down by around 6%. The euro was also down some 0.4% against th