Final answer:
Encouraging lawmakers in their party to support the party’s position on bills is a role of political parties that involves policy promotion and implementing policy. They create platforms to communicate their stances and coordinate members’ votes to pass laws aligned with these policies.
Step-by-step explanation:
Encouraging lawmakers in their party to support the party's position on bills being discussed is a role of political parties that involves policy promotion and the coordination to implement policy. Political parties are vital in linking the citizens' will and governmental policy. They do this by creating a platform that outlines their stance on various issues, which helps voters understand what the political beliefs of a candidate are, based on their party affiliation. This platform is essential in guiding the legislative agenda of a party when they win a majority in the House or Senate.
As an example, if a political party holds a majority in Congress, this party aims to pass laws that align with their platform. This involves coordinating party members to ensure they vote in support of these laws, hence promoting the party's policy and working toward implementing it into law.