Greece's Syriza party is on course to win 26 percent of votes in a snap election in September, just one point ahead of the conservative New Democracy party, a poll published by the Pulse for Action 24 television channel said on Tuesday. Former premier Alexis Tsipras resigned in August to seek a new mandate for a bailout deal he clinched with the country's international creditors. The poll also said the Golden Dawn party was on course to win 6 percent of votes, while 10.5 percent of Greeks were as yet undecided.