South Korea’s ruling Democratic Party (DP) has lost much of its early political advantage amid economic concerns and internal disputes, but conflicting opinion polls suggest the main opposition People Power Party (PPP) has yet to establish a lasting lead.

A Korea Society Opinion Institute (KSOI) survey released Wednesday put DP support at 31.5%, its lowest level recorded by the pollster, against 40.5% for the PPP. President Lee Jae Myung’s approval stood at 36.5%.

But the National Barometer Survey (NBS)released Thursday found the DP leading the PPP by 36% to 25%, with Lee’s approval rising two percentage points to 46%.