What is one way political parties shape public policy

Political parties shape public policy by helping the elected officials who belong to the party work together more effectively.  

Explanation:

Political parties around the world almost have the same strategy by which they manage to shape the public policy. They do this by establishing a strong link between the rulers and the people that are to be governed. For this to happen efficiently, they also need to have a good communication with the people. It is important to include the people in this in order to increase the participation of the people in the political spheres, in order to raise awareness among the people. This participation also ensures and guarantees the true essence of democracy.  

julius caesar turned the roman republic into the roman empire by coming in and taking the "dictator" role during the time of a civil war (elites vs lower classes) winning battles and reputation, then declaring him dictator for life

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