Political parties usually have their basis in shared political ideologies and objectives. In the United States the two major political parties are the Republican and Democrat parties.

They each wanted to promote their competing political ideologies :)

-Apex-

A good example of a political war was the Cold War between the United States and the Soviet Union. It was not completely bloodless, but it contrasted two very starkly different ideologies.

The two political ideologies used in the Cold War were democracy and communism. The United States was a democratic country while the Soviet Union was communist dictatorship. We elected our leaders while they had no choice of who was in charge.

A good example of a political war was the Cold War between the United States and the Soviet Union. It was not completely bloodless, but it contrasted two very starkly different ideologies.