I bolded the important part. When Ford was elected he represented a huge majority and he was able to translate that into massive influence over city council. However, people who voted for him have turned against him, and he is now one of the least popular mayors the city has ever seen. This has emboldened his political opponents and he is no longer able to win votes on council without making deals with "the other side".But he was voted in by a huge majority.
You're right he is changing the culture at city hall: It used to be about politics. Now it's a monkey show. Not with a special monkey either, that knows sign language, or can talk. Just a regular, ordinary monkey.