In the last presidential elections five years ago, 51.7 percent of voters had cast their ballots by 16:00 hrs.
The DIP President Ivica Crnic said that the voting was proceeding well in Bosnia-Herzegovina in accordance with rules and that there had been no reports about anything which might indicate irregularities.
DIP member Branko Hrvatin said the reports from the neighbouring country showed that a turnout was now higher than in the first round of the elections fourteen days ago.
In the southern town of Ljubuski the polling committee asked the DIP for an additional number of ballots since 3,300 voters went to the polls by noon and the polling station had been given 4,000 ballots in total. The DIP also sent its mobile team to monitor the polling in Ljubuski.
Commenting on allegations that there was a large number of subsequently listed voters to voter registers in Bosnia-Herzegovina, Hrvatin said that this "is not automatically suspicious", and that this did not mean that there were irregularities.
However, the DIP randomly checked 50 persons in Mostar after the first round of the polls, and found that there were no irregularities or cases of double voting.
If the DIP receives any reports of irregularity in the run-off, we will check them, Hrvatin said.
Crnic reiterated that every report would be checked but he criticised any attempt of blanket accusations.
According to police reports during the day, several hundred leaflets containing insults against one candidate in the run-off had been scattered around on the island of Lastovo.
Voting in Sunday's run-off election for Croatia's president, which was monitored by 1,000 activists of the election monitoring association GONG at polling stations throughout the country, proceeded in a tolerant and democratic atmosphere, with a small number of minor incidents.
GONG reported that 79 mobile teams had visited polling stations in all counties. GONG monitors were sent to Croatian embassies and consular offices in Graz, Vienna, London, Paris, The Hague, Zurich, and Mostar and Orasje in Bosnia-Herzegovina. Six mobile teams monitored elections in Bihac, Livno, Tomislavgrad, Neum, Ljubuski, Grude, Posusje, Citluk, Stolac, Capljina, Mostar and Siroki Brijeg, in Bosnia-Herzegovina.
Cooperation with voter committees and election commissions is mostly good, GONG said.
GONG said that many questions it had received by 16:00 hrs Sunday in Croatia referred to voters' enquiries about places where they could vote or the possibility for disabled persons and elderly citizens to vote.
Some citizens complained about the composition of polling committees and about violations of the 48-hour ban on electioneering which remains in effect until midnight.