Answer:
Because if the tape goes public, Nixon will lose the support of the voters.
Step-by-step explanation:
The tape that is mentioned above is the recording tape that contain a conversation between President Richard Nixon and Nixon administration officials. The tape came out during the Watergate scandal after Nixon was caught as the mastermind that formulate a plan to steal something from democrat's party safe box.
The tape contained a lot of racist remarks from Nixon toward another ethnicity such as Jewish and Indian people. It also contain various shady conversations about his plan to blackmail another government officials.