Greece's leftist Syriza party has a 0.5 percentage-point lead over the conservative New Democracy party ahead of a snap election on Sept. 20, according to a poll published on Monday. Former prime minister Alexis Tsipras's Syriza was on course to win 27 percent of the vote, while New Democracy would get 26.5 percent, the poll by Pulse for the bankingnews.gr website found. Tsipras started out as the frontrunner in the race but the two parties have been neck-and-neck in recent polls, making the election unexpectedly close.