The far-right candidate in Austria's presidential run-off is marginally ahead, exit polls suggest, but the race is still too close to call.
Two exit different polls give Norbert Hofer a lead over independent Alexander Van deer Belen that is within the margin of error.
For the first time since World War Two, both the main centrist parties were knocked out in the first round.
A key issue in the campaign was Europe's migrant crisis.