In Bulgaria's seaside city of Burgas as well as in many of the bigger cities, mayoral candidates failed to garner more than 50% for an outright win and will face rivals in a Nov. 4 run-off election.
In Burgas, GERB candidate Dimitar Nikolov is to face nationalist party Ataka's runner Valeri Simeonov on Sunday.
In Blagoevgrad, the common candidate of the rightist and nationalist formations Radoslav Taskov leads with 28.26% of the votes. He is followed by the socialist candidate Kostadin Paskalev (26.35%).
The incumbent Rumen Rashev gained 30,53% of the votes in Veliko Tarnovo and is to see socialist nominee Ivan Manchev (24,48%) at the run-offs.
GERB runner Rumen Vidov has garnered 40.52% securing the first place in Vidin. The incumbent Ivan Tsenov (28.65%) is his expected rival in the run-off.
In Vratsa, polls also indicate a run-off after politician Voyslav Bubev failed to sweep the victory at the first round. His percentage is estimated at 37.25% against 34.55% of GERB candidate Totyo Mladenov.
There will be a second round also in the town of Kustendil, where the right-winger Petar Paunov (32.74%) will face off against the socialists' representative Ivan Karakashki (18.48%).
Run-off will be held in the town of Lovech, where the socialist candidate Mincho Kazandzhiev has gained a lead over the main rival, backed by GERB Party, Anatolii Yordanov, 41.26% and 16.87% respectively.
In northern city of Russe the leader is the independent runner Bozhidar Yotov (46.15%) ahead of Vanyo Tanov from GERB (23.09%) and the run-off is inevitable.
In Pazardzhik, some 100 south of Sofia, socialist candidate Ivan Evstatiev is the front-runner with 32.58% followed by Todor Popov (27.02%).
Sliven in central Bulgaria will witness world-famous soccer star, incumbent Yordan Lechkov (37.42%) and socialist Martin Slavov (17.19%) as rivals in the run-off.
The town of Razgrad will have candidate Denchop Boyadzhiev (42.93%) compete with Nasko Atanasov (35.73%).
Stara Zagora's incumbent Evgenii Zhelev will fight against GERB runner Svetlin Tanchev, 44.8% and 32.4% respectively.
In Targovishte, the lead at the first round of the local vote has been taken by Krassimir Mirev (40.7%). He will face off against Svetlan Petkov (38.63%) at Sunday's run-off.
The citizens of the Shumen and Yambol will also have to cast ballots at a second round.