YOU SAID:

the mayor left because he was accused of drinking too much

INTO JAPANESE

彼はあまり飲んでいないと非難されたために市長が残った

BACK INTO ENGLISH

The mayor remained because he was accused of not drinking too much

INTO JAPANESE

市長は、あまり飲んでいないと非難されたために残った

BACK INTO ENGLISH

The mayor remained because he was accused of not drinking too much