Both sides in an election to choose a successor to Venezuela's late leader Hugo Chavez expressed confidence of victory after Sunday's vote, raising fears that the official result could be contested.
Acting President Nicolas Maduro led all polls before the vote, buoyed by Chavez's blessing before he died from cancer last month and vowing to continue the former president's self-styled socialist revolution.
But Maduro's rival, state governor Henrique Capriles, appeared to close the gap in the last days of the short campaign.
- Read: Fears over Venezuela vote.
More top news
The 18-year-old went missing in 1991, and her body has never been found.
More than 100 Auschwitz survivors from at least 17 countries were expected to attend the main ceremony at the concentration camp.
The recovery is slowing continuing, but it is being driven by the service industry instead of manufacturing - keeping the wealth in London.