Final answer:
The party whip is responsible for communicating the leaders' wishes to members in congress and making sure wavering members vote with the party.
Step-by-step explanation:
The party whip is responsible for communicating the leaders' wishes to members in congress and making sure wavering members vote with the party. Whips make the rounds in Congress, informing members of the leadership's position and voting strategy, and using incentives or punishments to ensure party discipline. They play a crucial role in maintaining party unity and advancing the party's agenda.