SOFIA—Bulgaria’s GERB party of former long-serving Prime Minister Boyko Borissov is set to win Sunday’s election, the fourth in less than two years, partial results showed, but its chances of forming a coalition government remain unclear.
With 99 percent of the ballots counted, partial official results showed GERB winning with 25.4 percent. Its main rival, the reformist We Continue the Change of Kiril Petkov, whose coalition cabinet collapsed in June, came second with 20.2 percent.
The results point to difficult coalition talks in a fractured parliament or even another snap election in the European Union member state.
Either would prolong political instability amid steep surging energy and consumer prices and war in Ukraine and raise the prospect of Bulgaria missing its 2024 target date for entry into the single currency euro zone….