Amid a deepening scandal linked to the cronyism allegations leveled against Prime Minister Shinzo Abe, 52.0 percent of the public thinks Finance Minister Taro Aso should resign over the related document-tampering, and 65.3 percent think Abe's wife, Akie, should be summoned to testify in the Diet, a survey showed Sunday.

In the same Kyodo News survey, the approval rating for Abe's Cabinet was found to have tumbled below 40 percent and below the public disapproval rate as well.

The approval rate stood at 38.7 percent after sliding 9.4 points from the previous survey from March 3 to 4. The disapproval rate meanwhile jumped to 48.2 percent from 39.0 percent in the previous survey.