Voting has begun in France in pivotal runoff elections that could hand an historic victory to Marine Le Pen’s far-right National Rally – or produce a hung parliament and potentially months of political deadlock. The first round of voting on June 30th saw the largest gains ever for the National Rally. The result of Sunday’s vote will ultimately determine which party controls the National Assembly and who will be prime minister. If support is further eroded for Macron’s weak centrist majority, he will be forced to share power with parties opposed to most of his pro-business, pro-European Union p…