Now that is a big worry, they could fall below 10% and if their votes get redistributed as a result, they go the way of the AKP, and Reg will have everything!!!
Early indications are that Reg set the right electoral strategy in terms of winning over the right wing nationalist votes, by attacking the kurds and making big nationalist statements about the Turkish motherland. Even if I did not want the HDP to get votes, I did not expect their vote to collapse, and possibly to below the 10% threshold.