Final answer:
The majority party usually has the advantage in endorsing proposed legislation as they control legislative agendas and committee appointments, which allows them to pursue their policy objectives. However, internal and external pressures can affect the passage of legislation, despite majority control.
Step-by-step explanation:
The party that usually has the advantage in endorsing proposed legislation is the majority party, which controls the legislative agenda. The majority party influences the election of leadership positions, committee memberships, and leadership roles, like committee chairs, within the state house and senate. This sway tends to support the party's policy platform, like states' rights, education reform, or health care policy, and can lead to different approaches to public policy problems based on whether the Democrats or Republicans are in power. Moreover, this advantage allows the majority party to direct the legislative process using special rules that restrict debate and shape the outcome of legislation.
Another aspect is partisanship and the role of political parties in supporting policies that secure them the most votes. This can sometimes lead to tradeoffs, where members of Congress may lean towards the interests of their constituencies or the directives of party leaders. For example, party alignment can vary by region, with more liberal areas tending to support Democrats, while more conservative, rural areas lean Republican.