One of the reasons why people defect to a ruling political party is that they expect to be protected from economic and financial crime prosecution.
In this cartoon, two individuals are having a chat. The two individuals are each holding a broom, signaling that they are members of the All Progressives Congress (APC), the party in power. One of the individuals asks if the other knows why he decided to defect to the APC. Answering his own question, he states that he defected for “the same reason that stops [his friend] from leaving” the APC: protection from prosecution.
On the other side of the cartoon is a banner with the logo of the EFCC (the Economic and Financial Crimes Commission) on it. As one would expect of shady individuals, the conversing individuals are not close to the logo. This is often the case in Nigeria. Politicians do not like the EFCC not to talk of the idea of moving close.