Voters at some polling stations are using only paper ballots in the presidential and vice-presidential runoff because the power went out, Central Election Commission (CEC) spokeswoman Stoyanka Balova said at the first briefing of the day.
Voting began at 7am. In some places the machines did not start at once.
Four polling stations in Malo Konare lost power. Two in Silistra switched to paper ballots, and voters in the village of Dobrovnitsa, Pazardzhik region, are also voting on paper. In the Kardzhali-area villages of Most and Chereshnitsa, a power fault means the machines are running on batteries.
In the first round, there were cases where machine voting was not completed. The CEC has therefore taken extra steps to make sure machine voting goes smoothly in the runoff, and has sent new instructions to municipalities and district election commissions. They say step-by-step instructions for voters must be put in a prominent place next to the machines at polling stations.
"Voters are told not to pull out the receipt and not to take out the card early, before voting is finished," Balova said.
Nearly 60 members of polling station commissions have been replaced in Sofia's 24th district since Wednesday. That is the most replacements anywhere. Commission members have also been replaced in Vratsa, Gabrovo, Lovech, Pleven, Plovdiv, Razgrad, Haskovo and Targovishte.
Despite the replacements, election day began on time and normally, the CEC spokeswoman said.
Balova added that the CEC has so far received no complaints or reports.