Final answer:
The primary method political parties use to translate goals into concrete policies is through legislation, which is achieved by electing members who support their policies to office and then governing with a unified direction.
Step-by-step explanation:
The primary method parties use to translate goals into concrete policies is through legislation. Parties advocate for, draft, and work to pass laws that are in alignment with their policy objectives. In this process, electing sympathetic members to office is crucial since it ensures the necessary votes to pass the desired legislation. In addition to this, political parties engage in various activities including fundraising, recruiting candidates, and registering voters to strengthen their political influence and achieve their policy goals. Lobbying is also an important strategy used by interest groups to influence policymakers directly, but it is not the primary method of political parties for translating goals into policies. Rather, parties operate through an organized effort to control decision-making authority, govern, and enact legislation that aligns with their vision.