Final answer:
Parties ensure good performance through regular communication, state and local party organizations, and distinct cohesive parties.
Step-by-step explanation:
Parties typically ensure good performance through various means. One way is by maintaining regular communication between the agency and its political principals to discuss performance and areas of improvement. State and local party organizations play a crucial role in party activities and are responsible for coordinating party formation and electoral processes. They also help create unity among party members and prepare candidates for elections. Additionally, distinct and cohesive parties are important for democracy as they offer voters clear policy choices, allow the opposition to keep a check on the party in power, and ensure accountability to the people.