SEOUL, Dec. 8 (Xinhua) -- South Korean President Lee Jae Myung's approval rating fell 1.7 percentage points from a week earlier to 69.4 percent last week, a weekly poll showed Monday.

The negative assessment on Lee's conduct of state affairs gained 1.0 percentage points to 28.9 percent, according to computer assisted telephone interviewing (CATI) by local pollster Flower Research.

The ruling liberal Democratic Party's support increased 1.5 percentage points to 57.7 percent, while the conservative opposition People Power Party's approval score added 1.0 percentage points to 25.6 percent.

Support rate for the minor left-leaning Rebuilding Korea Party and the minor rightist New Reform Party logged 2.6 percent and 2.0 percent each last week.

The pollster's separate survey of automated response system (ARS) showed that Lee's approval rating inched down 0.4 percentage points to 61.5 percent last week compared to the previous week.

The CATI and the ARS surveyed 1,002 and 1,007 voters each from Friday to Saturday. The polls had plus and minus 3.1 percentage points in margin of error with a confidence level of 95 percent.