Some opinion polls show Orban's Fidesz trailing opposition challenger
Hungary's economy hit by inflation, two years of near-stagnation
S&P has cut Hungary's rating outlook to negative amid fiscal risks
Opposition leader plans referendum on Ukraine's EU membership
Hungarian opposition leader Peter Magyar vowed on Sunday to unlock billions of euros of suspended European Union funding to revive the economy if elected next year, and to hold a referendum on whether Ukraine should join the 27-member bloc.