Public discontent with Prime Minister Taro Aso's Cabinet has tumbled 4.7 points to a new low of 13.4 percent since Shoichi Nakagawa resigned as finance minister, a new survey showed Wednesday.

The phone survey on 1,022 eligible voters, conducted within hours of Nakagawa's resignation Tuesday, also said the public disapproval rate surged 5.7 points to 76.6 percent. The previous poll was conducted from Feb. 7 to 8.

Nakagawa quit after appearing to be drunk at a Saturday press conference following the Group of Seven financial leaders' meeting in Rome.