Final answer:
The last function of political parties is to implement and enact policies.
Step-by-step explanation:
The last of the six functions of political parties is to implement and enact policies. Once a political party is able to win elections and hold seats in political office, they work towards implementing their party's platform and enacting policies that align with their party's goals. This involves coordinating their members to vote in favor of their party's policies and pushing for legislation that reflects their party's positions.